BMW S65B40 engine: specs, problems and prices

BMW built the S65B40 from 2007 to 2013. It is a 4.0 L naturally aspirated petrol V8 with 420 hp and 400 Nm, part of the S65 family. You will find it in the BMW E90 M3, BMW E92 M3 and BMW E93 M3.

This guide is about the S65B40 specifically: its specification, the cars that use it, how it differs from the other S65 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our S65 guide.

• Capacity and layout: 4.0 L, V8, naturally aspirated
• Output: 420 hp and 400 Nm
• Production: 2007–2013
• Fitted to: 3 models across 3 chassis generations
• In our stock: 82 units from 8.050,00 € — S65B40 engines for sale

S65B40 specifications

S65B40: 4.0 L, V8, petrol, naturally aspirated. Output is 420 hp with 400 Nm of torque, and production ran from 2007 to 2013. That is about 105 hp and 100 Nm per litre, a strong figure for a road engine of its era. It was fitted to the BMW E90 M3, BMW E92 M3 and BMW E93 M3.

What the code S65B40 means

• S marks an S-series code, reserved for engines developed by BMW M.
• 65 is the family number.
• B stands for petrol (from the German Benzin).
• 40 is the capacity in decilitres, so 4.0 litres.

Which BMW models use the S65B40

In the E90 fifth 3 Series saloon (2005–2012), the S65B40 powered the M3. We have 27 S65B40 units from E90 donor cars. All E90 engines

In the E92 fifth 3 Series coupé (2006–2013), the S65B40 powered the M3. We have 27 S65B40 units from E92 donor cars. All E92 engines

In the E93 fifth 3 Series convertible (2007–2013), the S65B40 powered the M3. We have 27 S65B40 units from E93 donor cars. All E93 engines

Common S65B40 problems

The S65B40 shares its weak points with the rest of the S65 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the S65 guide.

Idle control valve. The idle control valve fails and causes unstable idle.

S65B40 maintenance

• 10W-60 BMW M synthetic, about 8.8 litres.
• Oil every 10,000 km; bearings around 100,000 km.
• Timing chains, one per bank.

Will the S65B40 fit my car?

S65B40 prices

Our S65B40 stock runs to 82 units, priced from 8.050,00 € to 14.608,00 € with a median of 9.951,00 €.

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.

S65B40 prices by model year

Engines from 2005–2009 have a median of 10.200,00 €, while units from 2010–2014 sit at 9.867,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

S65B40 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.

S65B40 engines in stock

Here is a selection of S65B40 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.

BMW E93 M3 S65B40 Engine 2007, 203,900 km11.838,00 €BMW E90 M3 S65B40 Engine 2013, 123,300 km9.295,00 €BMW E90 M3 S65B40 Engine 2012, 145,700 km9.558,00 €BMW E93 M3 S65B40 Engine 2011, 42,300 km10.926,00 €BMW E93 M3 S65B40 Engine 2010, 91,000 km10.826,00 €BMW E92 M3 S65B40 Engine 2011, 48,200 km8.685,00 €BMW E92 M3 S65B40 Engine 2013, 129,100 km9.141,00 €BMW E93 M3 S65B40 Engine 2008, 64,200 km8.473,00 €BMW E90 M3 S65B40 Engine 2011, 188,100 km10.622,00 €BMW E92 M3 S65B40 Engine 2012, 206,500 km10.812,00 €BMW E90 M3 S65B40 Engine 2013, 43,500 km9.058,00 €BMW E93 M3 S65B40 Engine 2008, 91,800 km9.730,00 €

BMW E93 M3 S65B40 Engine 2007, 203,900 km — 11.838,00 €, reduced from 12.800,00 €. It comes from a 2007 donor car with 203,900 km, and 27 units are available. We can confirm fitment against your VIN the same day.

BMW E90 M3 S65B40 Engine 2013, 123,300 km — 9.295,00 €, reduced from 10.300,00 €. It comes from a 2013 donor car with 123,300 km, and 6 units are available. The listing shows every side of the engine and the fitted parts.

BMW E90 M3 S65B40 Engine 2012, 145,700 km — 9.558,00 €, reduced from 10.450,00 €. It comes from a 2012 donor car with 145,700 km, and 21 units are available. We can confirm fitment against your VIN the same day.

BMW E93 M3 S65B40 Engine 2011, 42,300 km — 10.926,00 €, reduced from 11.700,00 €. It comes from a 2011 donor car with 42,300 km, and 13 units are available. The listing shows every side of the engine and the fitted parts.

BMW E93 M3 S65B40 Engine 2010, 91,000 km — 10.826,00 €, reduced from 11.500,00 €. It comes from a 2010 donor car with 91,000 km, and 28 units are available. The listing shows every side of the engine and the fitted parts.

BMW E92 M3 S65B40 Engine 2011, 48,200 km — 8.685,00 €, reduced from 9.450,00 €. It comes from a 2011 donor car with 48,200 km, and 11 units are available. We can confirm fitment against your VIN the same day.

BMW E92 M3 S65B40 Engine 2013, 129,100 km — 9.141,00 €, reduced from 10.300,00 €. It comes from a 2013 donor car with 129,100 km, and 5 units are available. We can confirm fitment against your VIN the same day.

BMW E93 M3 S65B40 Engine 2008, 64,200 km — 8.473,00 €, reduced from 9.850,00 €. It comes from a 2008 donor car with 64,200 km, and 16 units are available. The listing shows every side of the engine and the fitted parts.

BMW E90 M3 S65B40 Engine 2011, 188,100 km — 10.622,00 €, reduced from 11.600,00 €. It comes from a 2011 donor car with 188,100 km, and 17 units are available. The listing shows every side of the engine and the fitted parts.

BMW E92 M3 S65B40 Engine 2012, 206,500 km — 10.812,00 €, reduced from 12.000,00 €. It comes from a 2012 donor car with 206,500 km, and 7 units are available. The listing shows every side of the engine and the fitted parts.

BMW E90 M3 S65B40 Engine 2013, 43,500 km — 9.058,00 €, reduced from 10.150,00 €. It comes from a 2013 donor car with 43,500 km, and 11 units are available. We can confirm fitment against your VIN the same day.

BMW E93 M3 S65B40 Engine 2008, 91,800 km — 9.730,00 €, reduced from 10.600,00 €. It comes from a 2008 donor car with 91,800 km, and 25 units are available. The listing shows every side of the engine and the fitted parts.

Buying a used S65B40: checklist

1. 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.
2. 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.
3. 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.
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. 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. 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.
10. Both cylinder banks. On a V engine, check compression, plugs and coils on both banks. Faults on one bank alone are common and easy to miss on a quick test.

Questions about the S65B40

How much power and torque does the BMW S65B40 have?

From the factory the BMW S65B40 makes 309 kW (420 HP) and 400 Nm of torque. It is a 4.0 liter (3,999 cc) V8, DOHC, 32 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 S65B40 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 S65 Engines · Search S65B40 in the shop

How much is a replacement S65B40 engine for a BMW E93 M3?

A used S65B40 for the BMW E93 M3 costs from about 8.050 € to 12.200 € 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 S65B40 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 S65 Engines · Search S65B40 in the shop

Can you check if an S65B40 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 S65B40, 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 M3, BMW E92 M3 and BMW E93 M3.

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 S65 Engines · Search S65B40 in the shop

Which cars use the BMW S65B40 engine?

BMW fitted the S65B40 to the BMW E90 M3, BMW E92 M3 and BMW E93 M3. These cars were built with this engine from about 2007 to 2013.

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.

The S65B40 is the only S65 version we list, which makes it easy to pick, but the wiring and the engine computer still need to match 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.

See all S65 Engines · Search S65B40 in the shop

What comes with a used S65B40 engine?

Each S65B40 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 S65 Engines · Search S65B40 in the shop

How much is a replacement S65B40 engine for a BMW E92 M3?

A used S65B40 for the BMW E92 M3 costs from about 8.050 € to 12.200 € 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 S65B40 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 S65 Engines · Search S65B40 in the shop

Is the BMW S65B40 a diesel or petrol engine?

The S65B40 is a petrol engine. It is a 4.0 liter (3,999 cc) V8, DOHC, 32 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.

See all S65 Engines · Search S65B40 in the shop

Will the S65B40 engine fit my BMW E92 M3?

Yes, if your BMW E92 M3 was built with the S65B40. BMW used this 4.0 liter (3,999 cc) petrol engine with 309 kW (420 HP) in the E92 M3 from about 2007 to 2013.

In our records the S65B40 is the engine for the E92 M3, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your E92 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 S65 Engines · Search S65B40 in the shop

What is the BMW S65B40 engine?

The BMW S65B40 is a 4.0 liter (3,999 cc) petrol engine from the S65 family. It has a V8, DOHC, 32 valve layout with no turbo (naturally aspirated), and makes 309 kW (420 HP) with 400 Nm of torque. BMW built it from 2007 to 2013 and it meets the Euro 4 emission standard.

You find the S65B40 in the BMW E90 M3, BMW E92 M3 and BMW E93 M3. What we list: BMW S65 4.0 V8 engines from the E90 and E92 M3.

At Autowerke Engines every S65B40 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 S65 Engines · Search S65B40 in the shop

How long does delivery of an S65B40 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 S65 Engines · Search S65B40 in the shop

What should I replace when I fit a used S65B40 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 S65 Engines · Search S65B40 in the shop

How much does a used BMW S65B40 engine cost?

A used BMW S65B40 engine in our yard usually costs between 8.050 € and 12.200 €. 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 S65 Engines · Search S65B40 in the shop

Will the S65B40 engine fit my BMW E93 M3?

Yes, if your BMW E93 M3 was built with the S65B40. BMW used this 4.0 liter (3,999 cc) petrol engine with 309 kW (420 HP) in the E93 M3 from about 2007 to 2013.

In our records the S65B40 is the engine for the E93 M3, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your E93 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 S65 Engines · Search S65B40 in the shop

How much is a replacement S65B40 engine for a BMW E90 M3?

A used S65B40 for the BMW E90 M3 costs from about 8.050 € to 12.200 € 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 S65B40 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 S65 Engines · Search S65B40 in the shop

Will the S65B40 engine fit my BMW E90 M3?

Yes, if your BMW E90 M3 was built with the S65B40. BMW used this 4.0 liter (3,999 cc) petrol engine with 309 kW (420 HP) in the E90 M3 from about 2007 to 2013.

In our records the S65B40 is the engine for the E90 M3, 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 S65 Engines · Search S65B40 in the shop

Does a used S65B40 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 S65 Engines · Search S65B40 in the shop

How do I know a used S65B40 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. 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 S65B40, 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 S65 Engines · Search S65B40 in the shop

Are there other versions of the BMW S65B40?

In our yard the S65B40 is the only listed version of the S65 family. It makes 309 kW (420 HP) and 400 Nm, and was built from 2007 to 2013.

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 S65 Engines · Search S65B40 in the shop

Delivery, warranty and payment

Before an S65B40 leaves our Hamburg yard it is drained of oil and coolant, every opening is sealed, and it is strapped to a pallet and wrapped. We send photographs of the packed unit and the tracking details.

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.

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.

S65 engine guide · S65B40 engines for sale · All S65 engines · Send us your VIN