The M52 is the aluminium-block successor to the M50, built from 1994 to 2000 for the E36, E39, E46 and Z3. Its 2.8 litre version in the 328i and 528i is still one of the best-balanced BMW sixes ever made.
Buyers choose an M52 to replace a worn unit in an E36 or E39, or to swap into an E30. Early examples have Nikasil bores, which suffered with high-sulphur fuel; later and US engines are safer. The M52TU added double VANOS and electronic throttle features.
- Production: 1994–2000
- Versions covered: M52B20, M52B25, M52B28 and M52TUB28
- Output range: 150–193 hp
- Fuel and layout: petrol inline-6
- Fitted to: 11 BMW models across 5 chassis generations
- In our stock now: 22 units from 1.301,00 € — browse all M52 engines
The M52 at a glance
The table lists every M52 version we supply with its capacity, layout, output and production years. Use it with your car's engine code to find the right unit.
| Engine code | Capacity | Layout | Power | Torque | Years |
|---|---|---|---|---|---|
| M52B20 | 2.0 L | Inline-6, naturally aspirated | 150 hp | 190 Nm | 1994–2000 |
| M52B25 | 2.5 L | Inline-6, naturally aspirated | 170 hp | 245 Nm | 1995–2000 |
| M52B28 | 2.8 L | Inline-6, naturally aspirated | 193 hp | 280 Nm | 1995–2000 |
| M52TUB28 | 2.8 L | Inline-6, naturally aspirated | 193 hp | 280 Nm | 1998–2000 |
Across 4 versions, output runs from 150 to 193 hp. The spread reflects different capacities, tuning for different markets and the technical updates BMW made over 7 years of production.
History of the M52
The M52 arrived in 1994 with an aluminium block, Nikasil cylinder coating in most markets and single VANOS. US engines used an iron block. From 1998 the M52TU switched to Alusil bores, added double VANOS and the DISA variable intake. The M54 replaced it in 2000.
1994: the M52B20 arrived with 2.0 L and 150 hp in the BMW E36 320i, BMW E39 520i and BMW Z3 2.0.
1995: the M52B25 arrived with 2.5 L and 170 hp in the BMW E36 323i, BMW E39 523i and BMW E46 323i. Compared with the M52B20, it added 20 hp.
1995: the M52B28 arrived with 2.8 L and 193 hp in the BMW E36 328i, BMW E39 528i and BMW E38 728i. Compared with the M52B25, it added 23 hp.
1998: the M52TUB28 arrived with 2.8 L and 193 hp in the BMW E46 328i, BMW E39 528i and BMW E38 728i. It matched the M52B28 for power.
Every M52 version explained
M52B20 (2.0 L, 150 hp)
The M52B20 is a 2.0 L inline-6 petrol engine, naturally aspirated, rated at 150 hp and 190 Nm. BMW built it from 1994 to 2000. That is about 75 hp and 95 Nm per litre, a strong figure for a road engine of its era. Within the M52 family, the M52B25 (170 hp), M52B28 (193 hp) and M52TUB28 (193 hp) are more powerful. It was fitted to the BMW E36 320i, BMW E39 520i and BMW Z3 2.0.
Reading the code: M marks an M-series code, the naming BMW used for its engine families up to the early 2000s; 52 is the family number; B stands for petrol (from the German Benzin); 20 is the capacity in decilitres, so 2.0 litres.
We have 5 M52B20 units in stock, priced from 1.311,00 € to 3.000,00 €.
M52B25 (2.5 L, 170 hp)
M52B25: 2.5 L, inline-6, petrol, naturally aspirated. Output is 170 hp with 245 Nm of torque, and production ran from 1995 to 2000. That is about 68 hp and 98 Nm per litre, a relaxed tune aimed at torque, durability and economy. Within the M52 family, the M52B28 (193 hp) and M52TUB28 (193 hp) are more powerful, while the M52B20 (150 hp) is milder. It was fitted to the BMW E36 323i, BMW E39 523i and BMW E46 323i.
Reading the code: M marks an M-series code, the naming BMW used for its engine families up to the early 2000s; 52 is the family number; B stands for petrol (from the German Benzin); 25 is the capacity in decilitres, so 2.5 litres.
We have 6 M52B25 units in stock, priced from 1.413,00 € to 3.099,00 €.
M52B28 (2.8 L, 193 hp)
Built from 1995 to 2000, the M52B28 displaces 2.8 L in an inline-6 layout and is naturally aspirated. It produces 193 hp and 280 Nm on petrol. That is about 69 hp and 100 Nm per litre, a relaxed tune aimed at torque, durability and economy. Within the M52 family, it is the most powerful version, while the M52B20 (150 hp) and M52B25 (170 hp) are milder. It was fitted to the BMW E36 328i, BMW E39 528i, BMW E38 728i and BMW Z3 2.8.
Reading the code: M marks an M-series code, the naming BMW used for its engine families up to the early 2000s; 52 is the family number; B stands for petrol (from the German Benzin); 28 is the capacity in decilitres, so 2.8 litres.
We have 7 M52B28 units in stock, priced from 1.339,00 € to 3.090,00 €.
M52TUB28 (2.8 L, 193 hp)
M52TUB28: 2.8 L, inline-6, petrol, naturally aspirated. Output is 193 hp with 280 Nm of torque, and production ran from 1998 to 2000. That is about 69 hp and 100 Nm per litre, a relaxed tune aimed at torque, durability and economy. Within the M52 family, it is the most powerful version, while the M52B20 (150 hp) and M52B25 (170 hp) are milder. It was fitted to the BMW E46 328i, BMW E39 528i and BMW E38 728i.
We have 4 M52TUB28 units in stock, priced from 1.301,00 € to 1.443,00 €.
Which cars use the M52
The M52 was fitted to 11 models. The list below is grouped by chassis generation so you can find your car quickly. Always confirm the exact code with your VIN, because BMW often used more than one engine in the same model.
BMW E36 third 3 Series (1990–2000)
In the third 3 Series, built 1990–2000 as a saloon, Touring, coupé, convertible, Compact, the M52 powered the 320i (M52B20, 150 hp), 323i (M52B25, 170 hp) and 328i (M52B28, 193 hp).
The quickest way to confirm the right M52 for your E36 is to send us the VIN; we check the engine code, the gearbox and the drive type. We currently have 5 M52 units from E36 donor cars. All E36 engines in stock.
The 320i uses the M52B20. BMW 320i engines for sale.
The 328i uses the M52B28. BMW 328i engines for sale.
BMW E39 fourth 5 Series (1995–2004)
In the fourth 5 Series, built 1995–2004 as a saloon, Touring, the M52 powered the 520i (M52B20, 150 hp), 523i (M52B25, 170 hp), 528i (M52B28, 193 hp) and 528i (M52TUB28, 193 hp).
For an E39, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 4 M52 units from E39 donor cars. All E39 engines in stock.
The 520i uses the M52B20. BMW 520i engines for sale.
The 528i uses the M52B28. BMW 528i engines for sale.
The 528i uses the M52TUB28. BMW 528i engines for sale.
BMW Z3 Z3 roadster and coupé (1995–2002)
In the Z3 roadster and coupé, built 1995–2002 as a roadster, coupé, the M52 powered the 2.0 (M52B20, 150 hp) and 2.8 (M52B28, 193 hp).
For a Z3, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 3 M52 units from Z3 donor cars. All Z3 engines in stock.
BMW E46 fourth 3 Series (1997–2006)
In the fourth 3 Series, built 1997–2006 as a saloon, Touring, coupé, convertible, Compact, the M52 powered the 323i (M52B25, 170 hp) and 328i (M52TUB28, 193 hp).
For an E46, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 2 M52 units from E46 donor cars. All E46 engines in stock.
The 328i uses the M52TUB28. BMW 328i engines for sale.
BMW E38 third 7 Series (1994–2001)
In the third 7 Series, built 1994–2001 as a saloon, the M52 powered the 728i (M52B28, 193 hp) and 728i (M52TUB28, 193 hp).
The quickest way to confirm the right M52 for your E38 is to send us the VIN; we check the engine code, the gearbox and the drive type. We currently have 2 M52 units from E38 donor cars. All E38 engines in stock.
Will an M52 fit my BMW? Model-by-model answers
Short answers for every model that left the factory with an M52, with prices from our current stock.
Will the M52B20 fit my BMW E36 320i?
The M52B20 is the original engine for the BMW E36 320i, which makes it the straightforward choice. The third 3 Series was built 1990–2000, and the M52B20 was produced 1994–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW E36 320i?
We have 1 M52B20 engine from E36 donor cars, priced from 3.000,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
Will the M52B20 fit my BMW E39 520i?
The M52B20 is the original engine for the BMW E39 520i, which makes it the straightforward choice. The fourth 5 Series was built 1995–2004, and the M52B20 was produced 1994–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW E39 520i?
We have 1 M52B20 engine from E39 donor cars, priced from 1.320,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
Will the M52B20 fit my BMW Z3 2.0?
The M52B20 is the original engine for the BMW Z3 2.0, which makes it the straightforward choice. The Z3 roadster and coupé was built 1995–2002, and the M52B20 was produced 1994–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW Z3 2.0?
We have 1 M52B20 engine from Z3 donor cars, priced from 1.311,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
Will the M52TUB28 fit my BMW E46 328i?
Yes, the BMW E46 328i left the factory with the M52TUB28, so an M52TUB28 from another car is the direct replacement. The fourth 3 Series was built 1997–2006, and the M52TUB28 was produced 1998–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW E46 328i?
We have 1 M52TUB28 engine from E46 donor cars, priced from 1.301,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
Will the M52TUB28 fit my BMW E39 528i?
The M52TUB28 is the original engine for the BMW E39 528i, which makes it the straightforward choice. The fourth 5 Series was built 1995–2004, and the M52TUB28 was produced 1998–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW E39 528i?
We have 1 M52TUB28 engine from E39 donor cars, priced from 1.443,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
Will the M52TUB28 fit my BMW E38 728i?
Yes, the BMW E38 728i left the factory with the M52TUB28, so an M52TUB28 from another car is the direct replacement. The third 7 Series was built 1994–2001, and the M52TUB28 was produced 1998–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW E38 728i?
We have 1 M52TUB28 engine from E38 donor cars, priced from 1.427,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.
M52 model-year guide
Use this year-by-year guide to see which M52 versions were in production when your car was built.
1994 — M52B20 was in production. New this year: M52B20.
1995 — M52B20, M52B25 and M52B28 were in production. New this year: M52B25 and M52B28.
1996 — M52B20, M52B25 and M52B28 were in production.
1997 — M52B20, M52B25 and M52B28 were in production.
1998 — M52B20, M52B25, M52B28 and M52TUB28 were in production. New this year: M52TUB28.
1999 — M52B20, M52B25, M52B28 and M52TUB28 were in production.
2000 — M52B20, M52B25, M52B28 and M52TUB28 were in production. Last year for M52B20, M52B25, M52B28 and M52TUB28.
Common M52 problems and what to check
No engine is perfect. These are the faults our workshop sees most often on the M52, what causes them and how to check a used unit before you buy.
Nikasil bore wear
Early Nikasil engines run poorly when high-sulphur fuel damages the bore coating. Low compression and hard hot starts are the symptoms.
How to check: A compression or leak-down test is the only reliable check; Alusil and iron-block units are not affected.
Cooling system
Plastic water pump impellers, thermostat housings and radiator necks crack.
How to check: Look at the date of the last cooling refresh and check for a metal impeller.
VANOS seals and solenoids
Hardened seals cause rough idle and a loss of torque; double VANOS units also rattle.
How to check: Listen for a diesel-like rattle at idle and check for torque loss low down.
DISA valve (M52TU)
The flap inside the DISA valve can break and be drawn into the engine.
How to check: Remove the DISA valve and check the flap pin for play.
Crankcase ventilation
A blocked CCV causes oil consumption and leaks.
How to check: Look for oil in the intake and smoke on start.
Diagnosing a failing M52: symptoms and causes
If your current engine is showing one of these symptoms, this table helps you judge whether it can be repaired or whether a replacement M52 is the better route.
| Symptom | Likely cause |
|---|---|
| Knocking from the bottom of the engine | A deep knock that rises with engine speed usually means worn rod or main bearings. |
| Overheating or losing coolant | Coolant loss without visible leaks points to a head gasket or a cracked head; visible leaks point to the water pump, hoses, thermostat housing or expansion tank. |
| White smoke that smells sweet | Coolant burning in the cylinders, from a head gasket, a cracked head or, on diesels, a leaking EGR cooler. |
| Blue smoke | Oil burning in the cylinders. |
| Rough idle or misfire | Ignition coils, spark plugs, injectors and vacuum leaks are the usual causes. |
| Loss of power | Start with the simple things: air filter, boost leaks on turbo engines, fuel pressure and fault codes. |
| Rattle for a few seconds after a cold start | The classic sign of a weak timing chain tensioner or stretched chain. |
| Poor low-down torque and uneven idle | VANOS seals or solenoids. |
| Hard starting when warm and low compression | On engines with Nikasil bores, the bore coating may be damaged. |
Knocking from the bottom of the engine. A deep knock that rises with engine speed usually means worn rod or main bearings. Stop driving: bearing failure ends with a broken connecting rod. A used engine is normally the most economical fix once the bottom end is damaged.
Overheating or losing coolant. Coolant loss without visible leaks points to a head gasket or a cracked head; visible leaks point to the water pump, hoses, thermostat housing or expansion tank. Overheating should be fixed before it warps the head.
White smoke that smells sweet. Coolant burning in the cylinders, from a head gasket, a cracked head or, on diesels, a leaking EGR cooler. Check the coolant level and look for oil in the coolant.
Blue smoke. Oil burning in the cylinders. A puff on start-up points to valve stem seals; constant smoke under load points to piston rings or, on turbo engines, turbo seals.
Rough idle or misfire. Ignition coils, spark plugs, injectors and vacuum leaks are the usual causes. A misfire on one cylinder that moves when you swap coils is a coil; one that stays is a plug, injector or compression problem.
Loss of power. Start with the simple things: air filter, boost leaks on turbo engines, fuel pressure and fault codes. A gradual loss with poor compression on a test points to internal wear.
Rattle for a few seconds after a cold start. The classic sign of a weak timing chain tensioner or stretched chain. It must be checked quickly: a chain that jumps a tooth can bend valves.
Poor low-down torque and uneven idle. VANOS seals or solenoids. The engine may run well at high revs but feel flat and lumpy at low speed.
Hard starting when warm and low compression. On engines with Nikasil bores, the bore coating may be damaged. A leak-down test confirms it.
Repair or replace your M52?
Repair makes sense when the fault is outside the engine or in a part that can be replaced without opening it: sensors, coils, injectors, gaskets, the water pump or a turbo. Replacement makes sense when the bottom end, the crankshaft, the bores or the head are damaged, because rebuilding an M52 properly costs more than a good used unit.
Ask your workshop for a written diagnosis before deciding. A compression test, an oil analysis and a borescope inspection take an hour or two and remove most of the guesswork.
M52 maintenance and running costs
| Item | Recommendation |
|---|---|
| Engine oil | 5W-30 or 5W-40 synthetic to BMW Longlife standard, about 6.5 litres with filter. |
| Timing drive | Duplex lower and single upper chains at the front with hydraulic tensioner. |
| Service interval | Oil every 10,000 to 15,000 km; VANOS seals and cooling every 100,000 km. |
Ask whether the block is Nikasil or Alusil. Engines built from late 1998 use Alusil.
The single best thing you can do for an M52 is to change the oil more often than the longest factory interval. Clean oil protects bearings, chains, VANOS units and turbochargers, and costs far less than any of them.
Cooling parts are consumables on this engine. Plan to replace the water pump, thermostat and expansion tank every 100,000 km or so, before they fail.
Buying a used M52: the full checklist
Work through these points before you order a used M52, whoever you buy from.
- Confirm the exact engine code. Read the code stamped on the block and compare it with the code for your car. Send us the last seven characters of the VIN and we confirm the match before anything is paid.
- Ask how the donor car was damaged. Most good used engines come from cars with body damage. A front-end impact can crack sensors, the timing cover or the sump; a rear or side impact usually leaves the engine untouched. The yard records the damage on each unit.
- Compression or leak-down figures. Even compression across all cylinders tells you more than mileage. Ask for the figures, not just a pass or fail, and compare the highest and lowest readings: a spread above 10 to 15 percent deserves a question.
- Look at the oil and coolant. Clean oil without metal particles and coolant without oil are good signs. Milky oil, oily coolant or a burnt smell mean the engine needs further checks before it is fitted.
- Photographs from every side. Good suppliers photograph the actual engine you will receive. Look for the block stamp, the sump, the timing cover and any broken brackets or connectors in the pictures.
- List of what is fitted. Engines are sold with different ancillaries: some have the turbo, injectors, manifolds, alternator and starter, others are long blocks. Agree the list in writing so you know which parts must come from your old engine.
- Sump, oil pickup and drive variants. Rear-drive, xDrive and front-drive cars can use different sumps, oil pickups and engine mounts even with the same engine code. Check that the sump matches your subframe and front axle.
- Gearbox and flywheel match. Manual and automatic engines differ at the flywheel or flexplate, and sometimes at the crankshaft spigot. Make sure the engine you buy matches your gearbox or that you transfer the right parts.
- Warranty terms in writing. Read what the warranty covers, how long it runs and what fitting conditions apply. Most warranties require a qualified workshop, new fluids and filters, and replacement of the cooling parts that caused the original failure.
- Why your old engine failed. Before fitting a replacement, find out why the original failed. An overheating radiator, a blocked intercooler or a failed turbo can destroy a second engine if they are not fixed.
- Timing chain noise. Listen for a rattle at the front of the engine for the first seconds after a cold start. On an engine that cannot be run, look at the chain guides through the oil filler or with the valve cover off.
- VANOS operation. Rough idle, a rattle from the front of the head and a loss of torque at low revs point to VANOS seals or solenoids. These are serviceable parts and are easier to renew with the engine out.
- Bore coating. Early engines with Nikasil bores can be damaged by high-sulphur fuel. A compression or leak-down test is the only reliable check; units with Alusil or iron bores are not affected.
- Plastic cooling parts. Expansion tanks, thermostat housings and water pump impellers made of plastic crack with age. Plan to replace them when the engine is fitted.
M52 prices: what you should pay
We currently hold 22 M52 engines. The cheapest is 1.301,00 €, the most expensive 3.099,00 €, and half of them cost less than 1.551,00 €.
Prices depend on the exact version, the donor's mileage, how complete the engine is and the demand for that code. Higher-output versions, low mileage and dressed engines with turbo, injectors and ancillaries cost more; long blocks and higher mileage cost less.
M52 engines in stock now
Here is a selection of M52 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.
BMW Z3 E36 M52B28 Engine 19981.339,00 €BMW E36 325i M52B25 Engine 19971.413,00 €BMW E39 528i M52B28 Complete Engine1.856,00 €BMW M52B20 Engine1.414,00 €BMW E39 523i M52B25 Complete Engine1.502,00 €BMW Z3 E36 M52B28 Engine 1998 — 1.339,00 €, reduced from 2.000,00 €. It comes from a 1998 donor car, and 30 units are available. The listing shows every side of the engine and the fitted parts.
BMW E36 325i M52B25 Engine 1997 — 1.413,00 €, reduced from 2.000,00 €. It comes from a 1997 donor car, and 27 units are available. The listing shows every side of the engine and the fitted parts.
BMW E39 528i M52B28 Complete Engine — 1.856,00 €, reduced from 2.400,00 €. It comes from a recorded donor car, and 9 units are available. Ask the desk for compression figures or extra photographs before you order.
BMW M52B20 Engine — 1.414,00 €, reduced from 1.900,00 €. It comes from a recorded donor car, and 19 units are available. The listing shows every side of the engine and the fitted parts.
BMW E39 523i M52B25 Complete Engine — 1.502,00 €, reduced from 2.100,00 €. It comes from a recorded donor car, and 5 units are available. We can confirm fitment against your VIN the same day.
Fitting a replacement M52
These are the steps we recommend to every workshop fitting one of our M52 engines.
- Compare the engines side by side. Put the replacement next to the old engine and compare sensors, brackets, connectors, the sump, the starter and the flywheel or flexplate. Note anything that must be transferred.
- Transfer the parts that differ. Move the parts that are specific to your car, such as the engine harness on some models, the sump on xDrive cars or the air conditioning compressor bracket. Use new seals and gaskets for everything you move.
- Replace the rear main seal and drive parts. With the engine out, the rear crankshaft seal is easy to reach. Fit a new one, inspect the flywheel and clutch on manual cars or the converter seal on automatics.
- Renew the cooling system. Most engine failures start with cooling. Fit a new water pump, thermostat and hoses, check the radiator and fan, and use the correct coolant.
- Fit new engine mounts. Old mounts transfer vibration and can let the engine move enough to damage hoses. They are cheap and easy to replace with the engine out.
- Inspect or replace the timing chain parts. Look at the guides and tensioner. On high-mileage engines, replacing them now costs far less than doing it later.
- Clean the intake. If the old engine failed internally, debris can be in the intake or intercooler. Clean them so nothing reaches the new engine.
- Fill with the right oil and prime it. Fill with new oil of the correct specification and a new filter. Crank with the fuel and ignition disabled until oil pressure builds.
- Coding and adaptations. On modern BMWs, the engine ECU must be matched to the car's immobiliser (CAS, FEM or BDC). Reset adaptations, register the battery and clear faults with diagnostic software.
- Reset VANOS adaptations. Clear the VANOS adaptations so the ECU learns the camshaft positions of the new engine.
- First start and leak check. Start the engine, let it idle and watch oil pressure, temperature and fault codes. Check for leaks and bleed the cooling system.
- First 1,000 km. Drive gently for the first few hundred kilometres, vary the engine speed and avoid full load. Change the oil and filter after about 1,000 km to remove any assembly debris.
Tuning and upgrades
The M52B28 is the base for many E36 builds: an S52 or M50 intake manifold, a remap and a better exhaust wake it up. Strokers to 3.0 litres use M54B30 parts.
Whatever you plan, start with a healthy engine: a compression test, fresh fluids and the known weak parts replaced. Power upgrades amplify any existing problem.
M52 compared with similar BMW engines
Buyers often compare the M52 with these engines. Here is how they line up.
| Engine | Power | Years | Median price in stock |
|---|---|---|---|
| M52 | 150–193 hp | 1994–2000 | 1.551,00 € |
| M54 | 170–231 hp | 2000–2006 | 1.794,00 € |
| M50 | 100–192 hp | 1954–1996 | 1.805,00 € |
| M20 | 125–170 hp | 1977–1993 | on request |
The M54 reaches higher outputs (up to 231 hp against 193 hp) and uses duplex and single chains at the front, no scheduled replacement. Its best-known faults are crankcase ventilation (ccv) and disa valve flap. Read the M54 guide.
The M50 is milder (up to 192 hp against 193 hp) and uses duplex lower chain and single upper chain at the front with hydraulic tensioner. Its best-known faults are cooling system and vanos seals (m50tu). Read the M50 guide.
The M20 is milder (up to 170 hp against 193 hp) and uses rubber timing belt with tensioner, changed with the water pump every 60,000 km or four years. Its best-known faults are timing belt failure and cylinder head cracks. Read the M20 guide.
Delivery, warranty and payment
Every M52 engine we sell is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped before it leaves Hamburg. You receive photographs of the packed engine and a tracking number.
Delivery is door to door and included in the price. Most European addresses receive the engine within five to ten working days; Germany and its neighbours are usually faster.
Every engine carries a 12-month warranty on eligible internal failure when a qualified workshop fits it with new fluids and filters. Payment is by card, bank transfer or crypto; your invoice is emailed as soon as you order.
We deliver M52 engines from Hamburg to customers across Europe and beyond. Typical door-to-door times and customs status:
| Country | Typical delivery | Customs and VAT |
|---|---|---|
| Germany | 2–4 working days | No customs; German VAT on the invoice |
| Netherlands | 3–5 working days | EU delivery, no customs |
| Belgium | 3–5 working days | EU delivery, no customs |
| Austria | 3–5 working days | EU delivery, no customs |
| Denmark | 3–5 working days | EU delivery, no customs |
| Poland | 3–6 working days | EU delivery, no customs |
| Czech Republic | 3–6 working days | EU delivery, no customs |
| France | 4–7 working days | EU delivery, no customs |
| Italy | 5–8 working days | EU delivery, no customs |
| Spain | 5–8 working days | EU delivery, no customs |
| Portugal | 6–9 working days | EU delivery, no customs |
| Sweden | 5–8 working days | EU delivery, no customs |
| Norway | 6–10 working days | Export; import VAT and duty in Norway |
| Switzerland | 5–8 working days | Export; import VAT and duty in Switzerland |
| United Kingdom | 5–10 working days | Export; UK import VAT and duty on arrival |
| Ireland | 6–10 working days | EU delivery, no customs |
| United States | Quoted per order | Export; US import duties apply |
| United Arab Emirates | Quoted per order | Export; UAE import duties apply |
Times are typical for pallet delivery after dispatch and can vary with holidays and remote addresses. Business buyers in the EU with a valid VAT number can order without German VAT.
Questions buyers ask about the M52
Will the M52B28 engine fit my BMW E36 328i?
Yes, if your BMW E36 328i was built with the M52B28. BMW used this 2.8 liter (2,793 cc) petrol engine with 142 kW (193 HP) in the E36 328i from about 1995 to 2000.
In our records the M52B28 is the engine for the E36 328i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E36 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much is a replacement M52B28 engine for a BMW E36 328i?
A used M52B28 for the BMW E36 328i costs from about 1.500 € to 2.450 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B28 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
Will the M52B28 engine fit my BMW E39 528i?
Yes, if your BMW E39 528i was built with the M52B28. BMW used this 2.8 liter (2,793 cc) petrol engine with 142 kW (193 HP) in the E39 528i from about 1995 to 2000.
In our records the M52B28 is the engine for the E39 528i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E39 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much is a replacement M52B28 engine for a BMW E39 528i?
A used M52B28 for the BMW E39 528i costs from about 1.500 € to 2.450 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B28 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
Will the M52B28 engine fit my BMW E46 328i?
Yes, if your BMW E46 328i was built with the M52B28. BMW used this 2.8 liter (2,793 cc) petrol engine with 142 kW (193 HP) in the E46 328i from about 1995 to 2000.
In our records the M52B28 is the engine for the E46 328i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E46 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much is a replacement M52B28 engine for a BMW E46 328i?
A used M52B28 for the BMW E46 328i costs from about 1.500 € to 2.450 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B28 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
Will the M52B28 engine fit my BMW Z3 2.8?
Yes, if your BMW Z3 2.8 was built with the M52B28. BMW used this 2.8 liter (2,793 cc) petrol engine with 142 kW (193 HP) in the Z3 2.8 from about 1995 to 2000.
In our records the M52B28 is the engine for the Z3 2.8, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your Z3 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much is a replacement M52B28 engine for a BMW Z3 2.8?
A used M52B28 for the BMW Z3 2.8 costs from about 1.500 € to 2.450 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B28 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
Will the M52B28 engine fit my BMW E38 728i?
Yes, if your BMW E38 728i was built with the M52B28. BMW used this 2.8 liter (2,793 cc) petrol engine with 142 kW (193 HP) in the E38 728i from about 1995 to 2000.
In our records the M52B28 is the engine for the E38 728i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E38 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much is a replacement M52B28 engine for a BMW E38 728i?
A used M52B28 for the BMW E38 728i costs from about 1.500 € to 2.450 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B28 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
Will the M52B25 engine fit my BMW E36 323i?
Yes, if your BMW E36 323i was built with the M52B25. BMW used this 2.5 liter (2,494 cc) petrol engine with 125 kW (170 HP) in the E36 323i from about 1995 to 2000.
In our records the M52B25 is the engine for the E36 323i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E36 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How much is a replacement M52B25 engine for a BMW E36 323i?
A used M52B25 for the BMW E36 323i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B25 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
Will the M52B25 engine fit my BMW E39 523i?
Yes, if your BMW E39 523i was built with the M52B25. BMW used this 2.5 liter (2,494 cc) petrol engine with 125 kW (170 HP) in the E39 523i from about 1995 to 2000.
In our records the M52B25 is the engine for the E39 523i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E39 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How much is a replacement M52B25 engine for a BMW E39 523i?
A used M52B25 for the BMW E39 523i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B25 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
Will the M52B25 engine fit my BMW E46 323i?
Yes, if your BMW E46 323i was built with the M52B25. BMW used this 2.5 liter (2,494 cc) petrol engine with 125 kW (170 HP) in the E46 323i from about 1995 to 2000.
In our records the M52B25 is the engine for the E46 323i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E46 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How much is a replacement M52B25 engine for a BMW E46 323i?
A used M52B25 for the BMW E46 323i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The M52B25 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
What is the BMW M52B28 engine?
The BMW M52B28 is a 2.8 liter (2,793 cc) petrol engine from the M52 family. It has an inline 6, DOHC, 24 valve layout with no turbo (naturally aspirated), and makes 142 kW (193 HP) with 280 Nm of torque. BMW built it from 1995 to 2000 and it meets the Euro 2 emission standard.
You find the M52B28 in the BMW E36 328i, BMW E39 528i, BMW E46 328i, BMW Z3 2.8 and BMW E38 728i. What we list: BMW M52 petrol engines for E36, E39, E46 and Z3.
At Autowerke Engines every M52B28 is a real used engine from our yard in Hamburg. The photos on each listing show the actual engine, not a stock picture. The yard checks the code, records what is bolted on, and seals the openings before the engine is offered. Each listing shows the year, the mileage and the price, so you can compare units side by side.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much does a used BMW M52B28 engine cost?
A used BMW M52B28 engine in our yard usually costs between 1.500 € and 2.450 €. The exact price depends on the year, the mileage and the parts that come with the engine.
Our units show recorded mileage from about 22,000 km up to around 200,000 km. Lower mileage and more ancillaries mean a higher price. Each listing shows its own price, and the price you see is the price you pay. Prices include VAT for private buyers.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. If you order a gearbox or a second engine on the same order, the fee is still charged once.
Inside the EU there is no import duty. For the UK and other non-EU countries, import duty and local VAT are paid by the receiver, and we supply a commercial invoice.
See all M52 Engines · Search M52B28 in the shop
Which cars use the BMW M52B28 engine?
BMW fitted the M52B28 to the BMW E36 328i, BMW E39 528i, BMW E46 328i, BMW Z3 2.8 and BMW E38 728i. These cars were built with this engine from about 1995 to 2000.
The badge on the boot is not enough to be sure. The same model name can hide two different engines, for example after a facelift or a change in emission rules. Always read the engine code stamped on the block, or look it up with your VIN.
Other engines in the same M52 family are the M52B25 (170 HP). They look alike but differ in power, parts and electronics, so they are not always a direct swap.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How much power and torque does the BMW M52B28 have?
From the factory the BMW M52B28 makes 142 kW (193 HP) and 280 Nm of torque. It is a 2.8 liter (2,793 cc) inline 6, DOHC, 24 valve petrol engine with no turbo (naturally aspirated).
Without a turbo, the power builds smoothly with the revs. A clean air intake, healthy ignition and the correct fuel are key to getting the full figure.
A used engine reaches its factory numbers when it is fitted with the matching engine computer and software, and serviced with the right oil and filters. If the engine computer from your car is a different version, a specialist may need to code it.
Every M52B28 on our site lists its year and mileage. If you want more photos or a short video of a unit, ask the desk and we send them before you pay.
See all M52 Engines · Search M52B28 in the shop
How do I know a used M52B28 engine is in good shape?
Before a unit is listed, the yard checks the engine code against the listing, writes down the parts fitted to it, seals every opening and photographs the real engine you will receive. An inspection certificate for the unit can travel with the order when you ask for it.
When you look at a listing, check the recorded mileage, the year and the photos of the ports and the stamp. Ask for photos of anything you want to see closer. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.
On a petrol engine like the M52B28, a careful fitter will also look at the spark plugs, the coils and the timing side before the engine goes in.
If the engine fails inside under normal use, the warranty covers you. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
See all M52 Engines · Search M52B28 in the shop
What comes with a used M52B28 engine?
Each M52B28 is sold as described on its own listing. The yard writes down the parts that are fitted to that unit, such as the turbo, the injectors, the manifolds or the alternator, so you know what arrives.
Some units are long engines with few ancillaries, others are more complete. If you need a part that is not listed, ask the desk. We often have the matching items in the yard.
Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
On delivery, the carrier brings the pallet to the kerb or a loading bay. Please have a forklift, a pallet truck or an engine crane ready.
See all M52 Engines · Search M52B28 in the shop
Is the BMW M52B28 a diesel or petrol engine?
The M52B28 is a petrol engine. It is a 2.8 liter (2,793 cc) inline 6, DOHC, 24 valve unit with no turbo (naturally aspirated), and it was built to the Euro 2 emission standard.
The emission standard matters for registration and for low-emission zones in many cities. When you replace an engine with the same code, the car keeps the same paperwork and the same emission class.
Petrol versions need the correct catalytic converters and oxygen sensors on the car to stay legal and to keep the engine computer happy. Reuse the parts from your car if they are in good condition.
If you are not sure which version you need, send us your VIN. We tell you the right code for free.
See all M52 Engines · Search M52B28 in the shop
What is the difference between the M52B28 and other M52 engines?
The M52B28 makes 142 kW (193 HP) and 280 Nm. The other M52 engines are: M52B25 with 125 kW (170 HP) and 245 Nm (1995 to 2000).
Engines in one family share a basic block, but the turbo, the injection, the sensors and the engine computer can differ. A higher power version often has different pistons, a bigger turbo or a different fuel system.
This is why we ask for the exact code. Fitting a different version can work, but the wiring, the software and sometimes the gearbox must be changed to match.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B28 in the shop
How long does delivery of an M52B28 engine take?
Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day. Delivery to the Netherlands, Belgium, Germany, France, Luxembourg and Denmark takes 1 to 3 working days.
Spain, Italy, Portugal, Poland, Czechia, Austria, Ireland, the Nordics and the Baltics take 2 to 5 working days. Greek and Spanish islands, Malta, Cyprus and remote areas take 4 to 8 working days. The UK and other countries outside the EU are quoted one by one.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
You get a tracking number when the pallet is collected. Check the wrapping before you sign, and note any damage on the paperwork.
See all M52 Engines · Search M52B28 in the shop
What should I replace when I fit a used M52B28 engine?
A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Fit a new oil filter and fresh oil of the grade BMW lists for this engine, and refill the coolant with the correct BMW antifreeze mix. Check the spark plugs and the ignition coils, and make sure the fuel lines are clean and tight before you crank the engine. Change the drive belt, the thermostat and the water pump seals if they look tired, because they are cheap while the engine is out.
Look at the engine mounts and the clutch or the torque converter while the engine is out. Old mounts can crack a new engine's brackets, and a worn clutch is much easier to change now.
Before the first start, turn the engine over without fuel until the oil pressure light goes out. Then let it idle, check for leaks, and drive gently for the first few hundred kilometres.
The warranty asks for fitting by a qualified mechanic and the correct oil, coolant and filters. Keep your receipts in case you ever need to make a claim.
See all M52 Engines · Search M52B28 in the shop
Does a used M52B28 engine come with a warranty?
Yes. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
The warranty does not cover damage from wrong fitting, overheating, low oil, wrong fluids or fuel, engines that were opened or modified without our approval, or labour and towing costs.
To claim, send us your order number, a short description of the problem, photos or a video, and a mechanic's report if we ask for one. If the claim is approved, we repair, replace or refund the engine.
Keep the receipts for the fitting, the oil and the filters. They make any claim quick and simple.
See all M52 Engines · Search M52B28 in the shop
Can you check if an M52B28 fits my car with my VIN?
Yes, and it is free. Send the 17-character VIN of your car and, if you have it, the gearbox code. We check the engine family, the build year window and the parts your car needs.
For the M52B28, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW E36 328i, BMW E39 528i, BMW E46 328i, BMW Z3 2.8 and BMW E38 728i.
We only reserve an engine once the match is confirmed, so you never pay for the wrong unit. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.
You can also use the VIN check on our site. It reads the year, the make, the model and the engine from the public vehicle register.
See all M52 Engines · Search M52B28 in the shop
What is the BMW M52B25 engine?
The BMW M52B25 is a 2.5 liter (2,494 cc) petrol engine from the M52 family. It has an inline 6, DOHC, 24 valve layout with no turbo (naturally aspirated), and makes 125 kW (170 HP) with 245 Nm of torque. BMW built it from 1995 to 2000 and it meets the Euro 2 emission standard.
You find the M52B25 in the BMW E36 323i, BMW E39 523i and BMW E46 323i. What we list: BMW M52 petrol engines for E36, E39, E46 and Z3.
At Autowerke Engines every M52B25 is a real used engine from our yard in Hamburg. Before a unit is listed, the yard checks the engine code against the listing, writes down the parts fitted to it, seals every opening and photographs the real engine you will receive. Each listing shows the year, the mileage and the price, so you can compare units side by side.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How much does a used BMW M52B25 engine cost?
A used BMW M52B25 engine in our yard usually costs between 1.250 € and 2.100 €. The exact price depends on the year, the mileage and the parts that come with the engine.
Our units show recorded mileage from about 22,000 km up to around 200,000 km. Lower mileage and more ancillaries mean a higher price. Each listing shows its own price, and the price you see is the price you pay. Prices include VAT for private buyers.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. If you order a gearbox or a second engine on the same order, the fee is still charged once.
Inside the EU there is no import duty. For the UK and other non-EU countries, import duty and local VAT are paid by the receiver, and we supply a commercial invoice.
See all M52 Engines · Search M52B25 in the shop
Which cars use the BMW M52B25 engine?
BMW fitted the M52B25 to the BMW E36 323i, BMW E39 523i and BMW E46 323i. These cars were built with this engine from about 1995 to 2000.
The badge on the boot is not enough to be sure. The same model name can hide two different engines, for example after a facelift or a change in emission rules. Always read the engine code stamped on the block, or look it up with your VIN.
Other engines in the same M52 family are the M52B28 (193 HP). They look alike but differ in power, parts and electronics, so they are not always a direct swap.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How much power and torque does the BMW M52B25 have?
From the factory the BMW M52B25 makes 125 kW (170 HP) and 245 Nm of torque. It is a 2.5 liter (2,494 cc) inline 6, DOHC, 24 valve petrol engine with no turbo (naturally aspirated).
Without a turbo, the power builds smoothly with the revs. A clean air intake, healthy ignition and the correct fuel are key to getting the full figure.
A used engine reaches its factory numbers when it is fitted with the matching engine computer and software, and serviced with the right oil and filters. If the engine computer from your car is a different version, a specialist may need to code it.
Every M52B25 on our site lists its year and mileage. If you want more photos or a short video of a unit, ask the desk and we send them before you pay.
See all M52 Engines · Search M52B25 in the shop
How do I know a used M52B25 engine is in good shape?
The photos on each listing show the actual engine, not a stock picture. The yard checks the code, records what is bolted on, and seals the openings before the engine is offered. An inspection certificate for the unit can travel with the order when you ask for it.
When you look at a listing, check the recorded mileage, the year and the photos of the ports and the stamp. Ask for photos of anything you want to see closer. If you want more photos or a short video of a unit, ask the desk and we send them before you pay.
On a petrol engine like the M52B25, a careful fitter will also look at the spark plugs, the coils and the timing side before the engine goes in.
If the engine fails inside under normal use, the warranty covers you. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
See all M52 Engines · Search M52B25 in the shop
What comes with a used M52B25 engine?
Each M52B25 is sold as described on its own listing. The yard writes down the parts that are fitted to that unit, such as the turbo, the injectors, the manifolds or the alternator, so you know what arrives.
Some units are long engines with few ancillaries, others are more complete. If you need a part that is not listed, ask the desk. We often have the matching items in the yard.
Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
On delivery, the carrier brings the pallet to the kerb or a loading bay. Please have a forklift, a pallet truck or an engine crane ready.
See all M52 Engines · Search M52B25 in the shop
Is the BMW M52B25 a diesel or petrol engine?
The M52B25 is a petrol engine. It is a 2.5 liter (2,494 cc) inline 6, DOHC, 24 valve unit with no turbo (naturally aspirated), and it was built to the Euro 2 emission standard.
The emission standard matters for registration and for low-emission zones in many cities. When you replace an engine with the same code, the car keeps the same paperwork and the same emission class.
Petrol versions need the correct catalytic converters and oxygen sensors on the car to stay legal and to keep the engine computer happy. Reuse the parts from your car if they are in good condition.
If you are not sure which version you need, send us your VIN. We tell you the right code for free.
See all M52 Engines · Search M52B25 in the shop
What is the difference between the M52B25 and other M52 engines?
The M52B25 makes 125 kW (170 HP) and 245 Nm. The other M52 engines are: M52B28 with 142 kW (193 HP) and 280 Nm (1995 to 2000).
Engines in one family share a basic block, but the turbo, the injection, the sensors and the engine computer can differ. A higher power version often has different pistons, a bigger turbo or a different fuel system.
This is why we ask for the exact code. Fitting a different version can work, but the wiring, the software and sometimes the gearbox must be changed to match.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all M52 Engines · Search M52B25 in the shop
How long does delivery of an M52B25 engine take?
Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day. Delivery to the Netherlands, Belgium, Germany, France, Luxembourg and Denmark takes 1 to 3 working days.
Spain, Italy, Portugal, Poland, Czechia, Austria, Ireland, the Nordics and the Baltics take 2 to 5 working days. Greek and Spanish islands, Malta, Cyprus and remote areas take 4 to 8 working days. The UK and other countries outside the EU are quoted one by one.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
You get a tracking number when the pallet is collected. Check the wrapping before you sign, and note any damage on the paperwork.
See all M52 Engines · Search M52B25 in the shop
What should I replace when I fit a used M52B25 engine?
A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Fit a new oil filter and fresh oil of the grade BMW lists for this engine, and refill the coolant with the correct BMW antifreeze mix. Check the spark plugs and the ignition coils, and make sure the fuel lines are clean and tight before you crank the engine. Change the drive belt, the thermostat and the water pump seals if they look tired, because they are cheap while the engine is out.
Look at the engine mounts and the clutch or the torque converter while the engine is out. Old mounts can crack a new engine's brackets, and a worn clutch is much easier to change now.
Before the first start, turn the engine over without fuel until the oil pressure light goes out. Then let it idle, check for leaks, and drive gently for the first few hundred kilometres.
The warranty asks for fitting by a qualified mechanic and the correct oil, coolant and filters. Keep your receipts in case you ever need to make a claim.
See all M52 Engines · Search M52B25 in the shop
Does a used M52B25 engine come with a warranty?
Yes. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
The warranty does not cover damage from wrong fitting, overheating, low oil, wrong fluids or fuel, engines that were opened or modified without our approval, or labour and towing costs.
To claim, send us your order number, a short description of the problem, photos or a video, and a mechanic's report if we ask for one. If the claim is approved, we repair, replace or refund the engine.
Keep the receipts for the fitting, the oil and the filters. They make any claim quick and simple.
See all M52 Engines · Search M52B25 in the shop
Can you check if an M52B25 fits my car with my VIN?
Yes, and it is free. Send the 17-character VIN of your car and, if you have it, the gearbox code. We check the engine family, the build year window and the parts your car needs.
For the M52B25, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW E36 323i, BMW E39 523i and BMW E46 323i.
We only reserve an engine once the match is confirmed, so you never pay for the wrong unit. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.
You can also use the VIN check on our site. It reads the year, the make, the model and the engine from the public vehicle register.
See all M52 Engines · Search M52B25 in the shop
What is the difference between the BMW M52 engines?
BMW M52 petrol engines for E36, E39, E46 and Z3. We list 2 versions: M52B28 (2.8 liter (2,793 cc), 142 kW (193 HP), 1995 to 2000); M52B25 (2.5 liter (2,494 cc), 125 kW (170 HP), 1995 to 2000).
The versions share the same basic design, but the power, the turbo or injection set-up, the electronics and the emission standard change. The right one for you is the one your car was built with.
The M52 family was used in chassis E36, E39, E46, Z3 and E38. Before a unit is listed, the yard checks the engine code against the listing, writes down the parts fitted to it, seals every opening and photographs the real engine you will receive.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
What should I check on a used BMW M52 engine?
Start with the basics: the engine code on the block, the recorded mileage and the photos. Make sure the code matches your car and the parts you need are on the unit.
On an M52 petrol engine, a fitter usually checks the spark plugs, the coils, the timing side and the oil seals. These parts are easy to check before fitting and easy to change if needed.
If you want more photos or a short video of a unit, ask the desk and we send them before you pay. An inspection certificate can travel with the order on request.
Once fitted, change the oil and filter early and drive gently at first. Report any problem right away so the warranty stays valid.
See all M52 Engines · Inspection certificate
Which years were BMW M52 engines made?
BMW built the M52 engines we list from about 1995 to 2000. The M52B28 ran from 1995 to 2000. The M52B25 ran from 1995 to 2000.
They went into chassis E36, E39, E46, Z3 and E38. The exact year of a car matters, because BMW sometimes changed the engine version or its parts in the middle of a model's life.
Each listing in our yard names the engine year, so you can match it to the build date of your car.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
Glossary
- VANOS — BMW's variable camshaft timing system. It adjusts the intake camshaft (single VANOS) or both camshafts (double VANOS) to improve torque and emissions.
- Nikasil — A nickel-silicon carbide coating used on the cylinder bores of some BMW engines in the 1990s. It was damaged by high-sulphur fuel.
- Long block — An engine with the block, head and internals but without most ancillaries such as manifolds, turbo, alternator or starter.
- Dressed engine — An engine with most ancillaries fitted, ready to install with fewer parts transferred.
- Compression test — A measurement of the pressure each cylinder builds when cranked. Even readings show healthy rings and valves.
- Leak-down test — A test that pressurises each cylinder and measures how much air escapes, showing where any leak is.
- LCI — Life Cycle Impulse, BMW's name for a mid-life update. Engines often change at the LCI.
- xDrive — BMW's all-wheel-drive system. xDrive cars often use a different sump and oil pickup.
- DME — Digital Motor Electronics, BMW's name for the engine control unit.
- CAS, FEM and BDC — The immobiliser and body modules that must be matched to the engine control unit on modern BMWs.
- Timing chain tensioner — A hydraulic or spring device that keeps the timing chain tight. Worn tensioners cause cold-start rattle.
- TU — Technical Update, BMW's suffix for a revised version of an engine.
Our verdict
The M52 has a clear set of strengths and a known list of weak points. Check the code against your VIN, ask for compression figures and photographs, replace the known weak parts while the engine is out, and fit it with fresh fluids and filters. Do that and a used M52 will give years of service.
Ready to order, or need help choosing? Browse every M52 in stock, contact the Hamburg desk or send us your VIN on WhatsApp.
