BMW S50B32 engine: specs, problems and prices

The S50B32 is a 3.2 L petrol inline-6 from BMW's S50 family, built 1995–1999 and rated at 321 hp and 350 Nm. It powered the BMW E36 M3 3.2.

This guide is about the S50B32 specifically: its specification, the cars that use it, how it differs from the other S50 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our S50 and S52 guide.

• Capacity and layout: 3.2 L, inline-6, naturally aspirated
• Output: 321 hp and 350 Nm
• Production: 1995–1999
• Fitted to: 1 model across 1 chassis generation
• In our stock: 39 units from 4.909,00 € — S50B32 engines for sale

S50B32 specifications

S50B32: 3.2 L, inline-6, petrol, naturally aspirated. Output is 321 hp with 350 Nm of torque, and production ran from 1995 to 1999. That is about 100 hp and 109 Nm per litre, a strong figure for a road engine of its era. Within the S50 family, it is the most powerful version, while the S50B30 (286 hp) and S50B30US (240 hp) are milder. It was fitted to the BMW E36 M3 3.2.

What the code S50B32 means

• S marks an S-series code, reserved for engines developed by BMW M.
• 50 is the family number.
• B stands for petrol (from the German Benzin).
• 32 is the capacity in decilitres, so 3.2 litres.

Which BMW models use the S50B32

In the E36 third 3 Series (1990–2000), the S50B32 powered the M3 3.2. We have 38 S50B32 units from E36 donor cars. All E36 engines

S50B32 compared with other S50 versions

S50B32 or S50B30?

The S50B30 has 35 hp less than the S50B32 (286 against 321 hp), from 3.0 L instead of 3.2 L, and was built 1992–1995. 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.

S50B32 or S50B30US?

The S50B30US has 81 hp less than the S50B32 (240 against 321 hp), from 3.0 L instead of 3.2 L, and was built 1994–1995. 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 S50B32 problems

The S50B32 shares its weak points with the rest of the S50 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the S50 and S52 guide.

Cooling system. Plastic expansion tanks, thermostat housings and impellers crack.

S50B32 maintenance

• 10W-60 synthetic is common for S50 engines; 5W-30 Longlife for S52, about 5.5 to 6.5 litres.
• Oil every 10,000 km; valve clearances for S50 every 30,000 km; VANOS service every 100,000 km.
• Duplex and single timing chains at the front.

Will the S50B32 fit my car?

Will the S50B32 fit my BMW E36 M3 3.2?

For the BMW E36 M3 3.2, the S50B32 is the factory engine and the one to order. The third 3 Series was built 1990–2000, and the S50B32 was produced 1995–1999, 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 M3 3.2?

We have 38 S50B32 engines from E36 donor cars, priced from 4.909,00 € to 12.739,00 €. 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.

S50B32 prices

Across 39 S50B32 units in our stock today, prices start at 4.909,00 € and reach 12.739,00 €. The median — the price in the middle of the range — is 7.501,00 €.

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.

S50B32 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.

S50B32 engines in stock

Here is a selection of S50B32 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.

BMW E36 M3 Coupe S50B32 Engine 1997, 189,300 km6.469,00 €BMW E36 M3 S50B32 Engine 1997, 170,300 km8.011,00 €BMW E36 M3 Coupe S50B32 Engine 1996, 45,400 km7.086,00 €BMW E36 M3 Sedan S50B32 Engine 1998, 35,000 km8.609,00 €BMW E36 M3 Sedan S50B32 Engine 1999, 68,100 km7.887,00 €BMW E36 M3 Sedan S50B32 Engine 1998, 79,200 km7.683,00 €BMW E36 M3 S50B32 Engine 1997, 74,500 km6.799,00 €BMW E36 M3 S50B32 Engine4.909,00 €BMW E36 M3 Coupe S50B32 Engine 1995, 119,700 km7.306,00 €BMW E36 M3 S50B32 Engine 1996, 203,400 km6.699,00 €BMW E36 M3 Coupe S50B32 Engine 1999, 72,000 km6.547,00 €BMW E36 M3 Coupe S50B32 Engine 1996, 199,300 km7.667,00 €

BMW E36 M3 Coupe S50B32 Engine 1997, 189,300 km — 6.469,00 €, reduced from 7.650,00 €. It comes from a 1997 donor car with 189,300 km, and 30 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E36 M3 S50B32 Engine 1997, 170,300 km — 8.011,00 €, reduced from 9.050,00 €. It comes from a 1997 donor car with 170,300 km, and 13 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E36 M3 Coupe S50B32 Engine 1996, 45,400 km — 7.086,00 €, reduced from 8.350,00 €. It comes from a 1996 donor car with 45,400 km, and 22 units are available. We can confirm fitment against your VIN the same day.

BMW E36 M3 Sedan S50B32 Engine 1998, 35,000 km — 8.609,00 €, reduced from 10.000,00 €. It comes from a 1998 donor car with 35,000 km, and 12 units are available. We can confirm fitment against your VIN the same day.

BMW E36 M3 Sedan S50B32 Engine 1999, 68,100 km — 7.887,00 €, reduced from 9.050,00 €. It comes from a 1999 donor car with 68,100 km, and 22 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E36 M3 Sedan S50B32 Engine 1998, 79,200 km — 7.683,00 €, reduced from 8.750,00 €. It comes from a 1998 donor car with 79,200 km, and 18 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E36 M3 S50B32 Engine 1997, 74,500 km — 6.799,00 €, reduced from 7.600,00 €. It comes from a 1997 donor car with 74,500 km, and 9 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW E36 M3 S50B32 Engine — 4.909,00 €, reduced from 5.500,00 €. It comes from a recorded donor car, and 8 units are available. We can confirm fitment against your VIN the same day.

BMW E36 M3 Coupe S50B32 Engine 1995, 119,700 km — 7.306,00 €, reduced from 8.700,00 €. It comes from a 1995 donor car with 119,700 km, and 12 units are available. The listing shows every side of the engine and the fitted parts.

BMW E36 M3 S50B32 Engine 1996, 203,400 km — 6.699,00 €, reduced from 8.000,00 €. It comes from a 1996 donor car with 203,400 km, and 6 units are available. The listing shows every side of the engine and the fitted parts.

BMW E36 M3 Coupe S50B32 Engine 1999, 72,000 km — 6.547,00 €, reduced from 7.150,00 €. It comes from a 1999 donor car with 72,000 km, and 17 units are available. We can confirm fitment against your VIN the same day.

BMW E36 M3 Coupe S50B32 Engine 1996, 199,300 km — 7.667,00 €, reduced from 8.650,00 €. It comes from a 1996 donor car with 199,300 km, and 8 units are available. We can confirm fitment against your VIN the same day.

Buying a used S50B32: checklist

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
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. Bearing and valve clearance history. M engines are built to tighter tolerances. Ask for the last rod bearing replacement and valve clearance check, and consider an oil analysis if the engine can be run.

Questions about the S50B32

What is the BMW S50B32 engine?

The BMW S50B32 is a 3.2 liter (3,201 cc) petrol engine from the S50 family. It has an inline 6, DOHC, 24 valve layout with no turbo (naturally aspirated), and makes 236 kW (321 HP) with 350 Nm of torque. BMW built it from 1995 to 1999 and it meets the Euro 2 emission standard.

You find the S50B32 in the BMW E36 M3, BMW E36 M3 Coupe and BMW E36 M3 Sedan. What we list: BMW S50 engines from the E36 M3.

At Autowerke Engines every S50B32 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 S50 Engines · Search S50B32 in the shop

Will the S50B32 engine fit my BMW E36 M3 Sedan?

Yes, if your BMW E36 M3 Sedan was built with the S50B32. BMW used this 3.2 liter (3,201 cc) petrol engine with 236 kW (321 HP) in the E36 M3 Sedan from about 1995 to 1999.

In our records the S50B32 is the engine for the E36 M3 Sedan, 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 S50 Engines · Search S50B32 in the shop

How much power and torque does the BMW S50B32 have?

From the factory the BMW S50B32 makes 236 kW (321 HP) and 350 Nm of torque. It is a 3.2 liter (3,201 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 S50B32 on our site lists its year and mileage. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.

See all S50 Engines · Search S50B32 in the shop

Will the S50B32 engine fit my BMW E36 M3 Coupe?

Yes, if your BMW E36 M3 Coupe was built with the S50B32. BMW used this 3.2 liter (3,201 cc) petrol engine with 236 kW (321 HP) in the E36 M3 Coupe from about 1995 to 1999.

In our records the S50B32 is the engine for the E36 M3 Coupe, 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 S50 Engines · Search S50B32 in the shop

How do I know a used S50B32 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 S50B32, 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 S50 Engines · Search S50B32 in the shop

How much is a replacement S50B32 engine for a BMW E36 M3?

A used S50B32 for the BMW E36 M3 costs from about 5.850 € to 8.950 € 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 S50B32 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 S50 Engines · Search S50B32 in the shop

Is the BMW S50B32 a diesel or petrol engine?

The S50B32 is a petrol engine. It is a 3.2 liter (3,201 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 S50 Engines · Search S50B32 in the shop

Will the S50B32 engine fit my BMW E36 M3?

Yes, if your BMW E36 M3 was built with the S50B32. BMW used this 3.2 liter (3,201 cc) petrol engine with 236 kW (321 HP) in the E36 M3 from about 1995 to 1999.

In our records the S50B32 is the engine for the E36 M3, 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 S50 Engines · Search S50B32 in the shop

Does a used S50B32 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 S50 Engines · Search S50B32 in the shop

Can you check if an S50B32 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 S50B32, 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 M3, BMW E36 M3 Coupe and BMW E36 M3 Sedan.

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 S50 Engines · Search S50B32 in the shop

How much is a replacement S50B32 engine for a BMW E36 M3 Sedan?

A used S50B32 for the BMW E36 M3 Sedan costs from about 5.850 € to 8.950 € 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 S50B32 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 S50 Engines · Search S50B32 in the shop

How much does a used BMW S50B32 engine cost?

A used BMW S50B32 engine in our yard usually costs between 5.850 € and 8.950 €. 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.

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Which cars use the BMW S50B32 engine?

BMW fitted the S50B32 to the BMW E36 M3, BMW E36 M3 Coupe and BMW E36 M3 Sedan. These cars were built with this engine from about 1995 to 1999.

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 S50 family are the S50B30 (286 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 S50 Engines · Search S50B32 in the shop

What is the difference between the S50B32 and other S50 engines?

The S50B32 makes 236 kW (321 HP) and 350 Nm. The other S50 engines are: S50B30 with 210 kW (286 HP) and 320 Nm (1992 to 1995).

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 S50 Engines · Search S50B32 in the shop

How much is a replacement S50B32 engine for a BMW E36 M3 Coupe?

A used S50B32 for the BMW E36 M3 Coupe costs from about 5.850 € to 8.950 € 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 S50B32 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 S50 Engines · Search S50B32 in the shop

How long does delivery of an S50B32 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 S50 Engines · Search S50B32 in the shop

What comes with a used S50B32 engine?

Each S50B32 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 S50 Engines · Search S50B32 in the shop

What should I replace when I fit a used S50B32 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. Change the drive belt, the thermostat and the water pump seals if they look tired, because they are cheap while the engine is out. 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 S50 Engines · Search S50B32 in the shop

Delivery, warranty and payment

Every S50B32 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.

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