BMW N52B25 engine: specs, problems and prices

The N52B25 is a 2.5 L petrol inline-6 from BMW's N52 family, built 2004–2011 and rated at 218 hp and 250 Nm. It powered the BMW E90 325i, BMW E60 525i, BMW E85 Z4 2.5si and BMW E83 X3 2.5si.

This guide is about the N52B25 specifically: its specification, the cars that use it, how it differs from the other N52 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our N52 guide.

• Capacity and layout: 2.5 L, inline-6, naturally aspirated
• Output: 218 hp and 250 Nm
• Production: 2004–2011
• Fitted to: 4 models across 4 chassis generations
• In our stock: 128 units from 1.421,00 € — N52B25 engines for sale

N52B25 specifications

Built from 2004 to 2011, the N52B25 displaces 2.5 L in an inline-6 layout and is naturally aspirated. It produces 218 hp and 250 Nm on petrol. That is about 87 hp and 100 Nm per litre, a strong figure for a road engine of its era. Within the N52 family, the N52B30 (258 hp) is more powerful. It was fitted to the BMW E90 325i, BMW E60 525i, BMW E85 Z4 2.5si and BMW E83 X3 2.5si.

What the code N52B25 means

• N marks an N-series code, the generation of BMW engines introduced from 2001.
• 52 is the family number.
• B stands for petrol (from the German Benzin).
• 25 is the capacity in decilitres, so 2.5 litres.

Which BMW models use the N52B25

In the E90 fifth 3 Series saloon (2005–2012), the N52B25 powered the 325i. We have 43 N52B25 units from E90 donor cars. All E90 engines

In the E60 fifth 5 Series (2003–2010), the N52B25 powered the 525i. We have 42 N52B25 units from E60 donor cars. All E60 engines

In the E85 first Z4 roadster (2002–2008), the N52B25 powered the Z4 2.5si. Engines from other models fit the E85 as long as the sump, mounts and ancillaries match, which we check against your VIN. All E85 engines

In the E83 first X3 (2003–2010), the N52B25 powered the X3 2.5si. Engines from other models fit the E83 as long as the sump, mounts and ancillaries match, which we check against your VIN. All E83 engines

N52B25 compared with other N52 versions

N52B25 or N52B30?

The N52B30 has 40 hp more than the N52B25 (258 against 218 hp), from 3.0 L instead of 2.5 L, and was built 2004–2015. A different capacity means a different crankshaft, pistons or head, and different software. It can be fitted as an upgrade with the matching engine control unit and wiring, but it is a conversion rather than a straight replacement.

Common N52B25 problems

The N52B25 shares its weak points with the rest of the N52 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the N52 guide.

Valve cover gasket and eccentric shaft sensor. The plastic valve cover leaks and its sensor gasket fails.

N52B25 maintenance

• 5W-30 BMW Longlife-01 or 04, about 6.5 litres.
• Oil every 10,000 to 15,000 km.
• Timing chain at the front.

Will the N52B25 fit my car?

Will the N52B25 fit my BMW E85 Z4 2.5si?

The N52B25 is the original engine for the BMW E85 Z4 2.5si, which makes it the straightforward choice. The first Z4 roadster was built 2002–2008, and the N52B25 was produced 2004–2011, 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 E85 Z4 2.5si?

We have 129 N52B25 engines in stock, priced from 601,00 € to 2.300,00 €. 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 N52B25 fit my BMW E83 X3 2.5si?

The N52B25 is the original engine for the BMW E83 X3 2.5si, which makes it the straightforward choice. The first X3 was built 2003–2010, and the N52B25 was produced 2004–2011, 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 E83 X3 2.5si?

We have 129 N52B25 engines in stock, priced from 601,00 € to 2.300,00 €. 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.

N52B25 prices

Across 128 N52B25 units in our stock today, prices start at 1.421,00 € and reach 2.300,00 €. The median — the price in the middle of the range — is 1.841,00 €.

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.

N52B25 prices by model year

Engines from 2005–2009 have a median of 1.801,00 €, while units from 2010–2014 sit at 1.890,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

N52B25 prices by mileage

Mileage matters less than history on a well-maintained BMW engine, but it is a useful guide. A low-mileage unit from a younger car gives you more life for a modest premium.

N52B25 engines in stock

Here is a selection of N52B25 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.

BMW E60 525i N52B25 Engine 2005, 190,600 km1.689,00 €BMW E60 525i N52B25 Engine 2007, 81,300 km1.690,00 €BMW E91 325i N52B25 Engine 2008, 154,700 km1.600,00 €BMW E90 325i N52B25 Engine 2009, 116,200 km1.564,00 €BMW E60 525i N52B25 Engine 2010, 121,800 km1.876,00 €BMW E91 325i N52B25 Engine 2011, 206,800 km1.825,00 €BMW E90 325i N52B25 Engine 2011, 125,800 km2.189,00 €BMW E60 525i N52B25 Engine 2007, 53,400 km2.057,00 €BMW E60 525i N52B25 Engine 2010, 122,600 km2.224,00 €BMW E60 525i N52B25 Engine 2011, 59,400 km1.671,00 €BMW E91 325i N52B25 Engine 2007, 40,100 km1.695,00 €BMW E60 525i N52B25 Engine 2007, 158,200 km2.097,00 €

BMW E60 525i N52B25 Engine 2005, 190,600 km — 1.689,00 €, reduced from 2.450,00 €. It comes from a 2005 donor car with 190,600 km, and 6 units are available. The listing shows every side of the engine and the fitted parts.

BMW E60 525i N52B25 Engine 2007, 81,300 km — 1.690,00 €, reduced from 2.350,00 €. It comes from a 2007 donor car with 81,300 km, and 20 units are available. We can confirm fitment against your VIN the same day.

BMW E91 325i N52B25 Engine 2008, 154,700 km — 1.600,00 €, reduced from 2.700,00 €. It comes from a 2008 donor car with 154,700 km, and 7 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E90 325i N52B25 Engine 2009, 116,200 km — 1.564,00 €, reduced from 2.600,00 €. It comes from a 2009 donor car with 116,200 km, and 28 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E60 525i N52B25 Engine 2010, 121,800 km — 1.876,00 €, reduced from 3.100,00 €. It comes from a 2010 donor car with 121,800 km, and 27 units are available. The listing shows every side of the engine and the fitted parts.

BMW E91 325i N52B25 Engine 2011, 206,800 km — 1.825,00 €, reduced from 2.600,00 €. It comes from a 2011 donor car with 206,800 km, and 7 units are available. The listing shows every side of the engine and the fitted parts.

BMW E90 325i N52B25 Engine 2011, 125,800 km — 2.189,00 €, reduced from 3.050,00 €. It comes from a 2011 donor car with 125,800 km, and 11 units are available. We can confirm fitment against your VIN the same day.

BMW E60 525i N52B25 Engine 2007, 53,400 km — 2.057,00 €, reduced from 3.150,00 €. It comes from a 2007 donor car with 53,400 km, and 7 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E60 525i N52B25 Engine 2010, 122,600 km — 2.224,00 €, reduced from 3.250,00 €. It comes from a 2010 donor car with 122,600 km, and 8 units are available. The listing shows every side of the engine and the fitted parts.

BMW E60 525i N52B25 Engine 2011, 59,400 km — 1.671,00 €, reduced from 2.750,00 €. It comes from a 2011 donor car with 59,400 km, and 27 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E91 325i N52B25 Engine 2007, 40,100 km — 1.695,00 €, reduced from 2.800,00 €. It comes from a 2007 donor car with 40,100 km, and 29 units are available. The listing shows every side of the engine and the fitted parts.

BMW E60 525i N52B25 Engine 2007, 158,200 km — 2.097,00 €, reduced from 3.350,00 €. It comes from a 2007 donor car with 158,200 km, and 8 units are available. We can confirm fitment against your VIN the same day.

Buying a used N52B25: checklist

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. Double VANOS units and solenoids. Ask for the adaptation values or fault history if the engine was running. Solenoids are inexpensive and are often replaced as a matter of course on a used engine.
9. Valvetronic motor and eccentric shaft sensor. The Valvetronic motor and its sensor cause limp-mode faults when they fail. Inspect the connector and the seal around the motor for oil.
10. Electric water pump. This engine uses an electric water pump. It fails without warning and needs a diagnostic bleeding routine when it is replaced or the system is refilled.

Questions about the N52B25

Will the N52B25 engine fit my BMW E91 325i?

Yes, if your BMW E91 325i was built with the N52B25. BMW used this 2.5 liter (2,497 cc) petrol engine with 160 kW (218 HP) in the E91 325i from about 2005 to 2011.

In our records the N52B25 is the engine for the E91 325i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your E91 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 N52 Engines · Search N52B25 in the shop

What is the difference between the N52B25 and other N52 engines?

The N52B25 makes 160 kW (218 HP) and 250 Nm. The other N52 engines are: N52B30 with 190 kW (258 HP) and 310 Nm (2005 to 2011).

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 N52 Engines · Search N52B25 in the shop

What should I replace when I fit a used N52B25 engine?

A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Check the spark plugs and the ignition coils, and make sure the fuel lines are clean and tight before you crank the engine. 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. Use new gaskets for the exhaust manifold, the intake and the sump plug, and check every hose clip before the first start.

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 N52 Engines · Search N52B25 in the shop

How long does delivery of an N52B25 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 N52 Engines · Search N52B25 in the shop

How much is a replacement N52B25 engine for a BMW E90 325i?

A used N52B25 for the BMW E90 325i costs from about 1.400 € to 2.350 € 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 N52B25 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 N52 Engines · Search N52B25 in the shop

How much does a used BMW N52B25 engine cost?

A used BMW N52B25 engine in our yard usually costs between 1.400 € and 2.350 €. 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 N52 Engines · Search N52B25 in the shop

How much is a replacement N52B25 engine for a BMW E60 525i?

A used N52B25 for the BMW E60 525i costs from about 1.400 € to 2.350 € 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 N52B25 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 N52 Engines · Search N52B25 in the shop

What comes with a used N52B25 engine?

Each N52B25 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 N52 Engines · Search N52B25 in the shop

Will the N52B25 engine fit my BMW E90 325i?

Yes, if your BMW E90 325i was built with the N52B25. BMW used this 2.5 liter (2,497 cc) petrol engine with 160 kW (218 HP) in the E90 325i from about 2005 to 2011.

In our records the N52B25 is the engine for the E90 325i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your E90 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 N52 Engines · Search N52B25 in the shop

How much power and torque does the BMW N52B25 have?

From the factory the BMW N52B25 makes 160 kW (218 HP) and 250 Nm of torque. It is a 2.5 liter (2,497 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 N52B25 on our site lists its year and mileage. You can ask for extra photos, a close-up of the code stamp or a short video before you order.

See all N52 Engines · Search N52B25 in the shop

How do I know a used N52B25 engine is in good shape?

Each engine in the yard is inspected in Hamburg. The code is matched to the listing, the parts on the engine are recorded, the openings are sealed and the real unit is photographed. 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. You can ask for extra photos, a close-up of the code stamp or a short video before you order.

On a petrol engine like the N52B25, 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 N52 Engines · Search N52B25 in the shop

Will the N52B25 engine fit my BMW E87 125i?

Yes, if your BMW E87 125i was built with the N52B25. BMW used this 2.5 liter (2,497 cc) petrol engine with 160 kW (218 HP) in the E87 125i from about 2005 to 2011.

In our records the N52B25 is the engine for the E87 125i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your E87 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.

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Which cars use the BMW N52B25 engine?

BMW fitted the N52B25 to the BMW E90 325i, BMW E91 325i, BMW E60 525i and BMW E87 125i. These cars were built with this engine from about 2005 to 2011.

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 N52 family are the N52B30 (258 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 N52 Engines · Search N52B25 in the shop

How much is a replacement N52B25 engine for a BMW E87 125i?

A used N52B25 for the BMW E87 125i costs from about 1.400 € to 2.350 € 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 N52B25 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 N52 Engines · Search N52B25 in the shop

Is the BMW N52B25 a diesel or petrol engine?

The N52B25 is a petrol engine. It is a 2.5 liter (2,497 cc) inline 6, DOHC, 24 valve unit with no turbo (naturally aspirated), and it was built to the Euro 4 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.

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Can you check if an N52B25 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 N52B25, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW E90 325i, BMW E91 325i, BMW E60 525i and BMW E87 125i.

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 N52 Engines · Search N52B25 in the shop

What is the BMW N52B25 engine?

The BMW N52B25 is a 2.5 liter (2,497 cc) petrol engine from the N52 family. It has an inline 6, DOHC, 24 valve layout with no turbo (naturally aspirated), and makes 160 kW (218 HP) with 250 Nm of torque. BMW built it from 2005 to 2011 and it meets the Euro 4 emission standard.

You find the N52B25 in the BMW E90 325i, BMW E91 325i, BMW E60 525i and BMW E87 125i. What we list: BMW N52 naturally aspirated petrol engines for E90, E60 and Z4.

At Autowerke Engines every N52B25 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 N52 Engines · Search N52B25 in the shop

Will the N52B25 engine fit my BMW E60 525i?

Yes, if your BMW E60 525i was built with the N52B25. BMW used this 2.5 liter (2,497 cc) petrol engine with 160 kW (218 HP) in the E60 525i from about 2005 to 2011.

Some E60 525i cars were built with a different engine: the M54B25. These look alike from the outside, so check the code on your engine or send us your VIN.

Also tell us if your E60 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 N52 Engines · Search N52B25 in the shop

Does a used N52B25 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 N52 Engines · Search N52B25 in the shop

How much is a replacement N52B25 engine for a BMW E91 325i?

A used N52B25 for the BMW E91 325i costs from about 1.400 € to 2.350 € 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 N52B25 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 N52 Engines · Search N52B25 in the shop

Delivery, warranty and payment

Every N52B25 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.

Door-to-door delivery is included to the address you give at checkout. Typical delivery takes three to five working days within Germany and neighbouring countries and five to ten working days to the rest of Europe and the UK.

A 12-month warranty covers eligible internal failure when the engine is fitted by a qualified workshop with new fluids and filters. You can pay by card, bank transfer or crypto and receive the invoice by email straight away.

N52 engine guide · N52B25 engines for sale · All N52 engines · Send us your VIN