BMW S63B44T4 engine: specs, problems and prices

The S63B44T4 is a 4.4 L petrol V8 from BMW's S63 family, built 2017–2026 and rated at 625 hp and 750 Nm. It powered the BMW F90 M5, BMW F91 M8, BMW F95 X5 M and BMW F96 X6 M.

This guide is about the S63B44T4 specifically: its specification, the cars that use it, how it differs from the other S63 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our S63 guide.

• Capacity and layout: 4.4 L, V8, twin-turbo
• Output: 625 hp and 750 Nm
• Production: 2017–2026
• Fitted to: 4 models across 4 chassis generations
• In our stock: 8 units from 5.321,00 € — S63B44T4 engines for sale

S63B44T4 specifications

The S63B44T4 is a 4.4 L V8 petrol engine, twin-turbo, rated at 625 hp and 750 Nm. BMW built it from 2017 to 2026. That is about 142 hp and 170 Nm per litre, a high specific output that reflects a performance-focused design. Within the S63 family, it is the most powerful version, while the S63B44 (560 hp), S63B44T0 (560 hp) and S63B44T2 (600 hp) are milder. It was fitted to the BMW F90 M5, BMW F91 M8, BMW F95 X5 M and BMW F96 X6 M.

What the code S63B44T4 means

• S marks an S-series code, reserved for engines developed by BMW M.
• 63 is the family number.
• B stands for petrol (from the German Benzin).
• 44 is the capacity in decilitres, so 4.4 litres.
• T4 identifies the version or output stage.

Which BMW models use the S63B44T4

In the F90 M5 (2017–2024), the S63B44T4 powered the M5. We have 3 S63B44T4 units from F90 donor cars.

In the F91 M8 convertible (2019–), the S63B44T4 powered the M8. We have 1 S63B44T4 unit from F91 donor cars.

In the F95 X5 M (2019–), the S63B44T4 powered the X5 M. We have 1 S63B44T4 unit from F95 donor cars.

In the F96 X6 M (2019–), the S63B44T4 powered the X6 M. We have 1 S63B44T4 unit from F96 donor cars.

S63B44T4 compared with other S63 versions

S63B44T4 or S63B44T2?

The S63B44T2 has 25 hp less than the S63B44T4 (600 against 625 hp), from the same 4.4 L, and was built 2017–2023. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

S63B44T4 or S63B44T0?

The S63B44T0 has 65 hp less than the S63B44T4 (560 against 625 hp), from the same 4.4 L, and was built 2011–2013. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

S63B44T4 or S63B44?

The S63B44 has 65 hp less than the S63B44T4 (560 against 625 hp), from the same 4.4 L, and was built 2010–2017. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

Common S63B44T4 problems

The S63B44T4 shares its weak points with the rest of the S63 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the S63 guide.

Turbochargers. Turbos wear and leak oil because of heat inside the V.

S63B44T4 maintenance

• 0W-30 or 5W-30 BMW Longlife-01, about 9 litres.
• Oil every 7,500 to 10,000 km; shorter if driven hard.
• Timing chains, one per bank.

Will the S63B44T4 fit my car?

Will the S63B44T4 fit my BMW F90 M5?

For the BMW F90 M5, the S63B44T4 is the factory engine and the one to order. The M5 was built 2017–2024, and the S63B44T4 was produced 2017–2026, 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 F90 M5?

We have 3 S63B44T4 engines from F90 donor cars, priced from 5.321,00 € to 17.403,00 €. 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 S63B44T4 fit my BMW F91 M8?

For the BMW F91 M8, the S63B44T4 is the factory engine and the one to order. The M8 convertible was built 2019–, and the S63B44T4 was produced 2017–2026, 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 F91 M8?

We have 1 S63B44T4 engine from F91 donor cars, priced from 17.501,00 €. 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 S63B44T4 fit my BMW F95 X5 M?

Yes, the BMW F95 X5 M left the factory with the S63B44T4, so an S63B44T4 from another car is the direct replacement. The X5 M was built 2019–, and the S63B44T4 was produced 2017–2026, 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 F95 X5 M?

We have 1 S63B44T4 engine from F95 donor cars, priced from 17.492,00 €. 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 S63B44T4 fit my BMW F96 X6 M?

The S63B44T4 is the original engine for the BMW F96 X6 M, which makes it the straightforward choice. The X6 M was built 2019–, and the S63B44T4 was produced 2017–2026, 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 F96 X6 M?

We have 1 S63B44T4 engine from F96 donor cars, priced from 17.483,00 €. 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.

S63B44T4 prices

Our S63B44T4 stock runs to 8 units, priced from 5.321,00 € to 17.501,00 € with a median of 17.403,00 €.

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.

S63B44T4 prices by model year

Engines from 2015–2019 have a median of 5.321,00 €, while units from 2020–2024 sit at 13.921,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

S63B44T4 engines in stock

Here is a selection of S63B44T4 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.

BMW F90 M5 S63B44T4 Engine 202013.921,00 €BMW F96 X6 M S63B44T4 Engine, Premium Grade17.483,00 €BMW F90 M5 S63B44T4 Engine, Premium Grade17.403,00 €Used BMW M5 Competition 2019 S63B44T4 F90 Engine5.321,00 €BMW S63B44T4 Engine10.922,00 €

BMW F90 M5 S63B44T4 Engine 2020 — 13.921,00 €, reduced from 14.500,00 €. It comes from a 2020 donor car, and 19 units are available. The listing shows every side of the engine and the fitted parts.

BMW F96 X6 M S63B44T4 Engine, Premium Grade — 17.483,00 €, reduced from 18.000,00 €. It comes from a recorded donor car, and 20 units are available. The listing shows every side of the engine and the fitted parts.

BMW F90 M5 S63B44T4 Engine, Premium Grade — 17.403,00 €, reduced from 18.000,00 €. It comes from a recorded donor car, and 14 units are available. The listing shows every side of the engine and the fitted parts.

Used BMW M5 Competition 2019 S63B44T4 F90 Engine — 5.321,00 €, reduced from 6.100,00 €. It comes from a 2019 donor car, and 18 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW S63B44T4 Engine — 10.922,00 €, reduced from 11.300,00 €. It comes from a recorded donor car, and 17 units are available. We can confirm fitment against your VIN the same day.

Buying a used S63B44T4: checklist

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. Turbocharger shaft play and oil. Rotate the compressor wheel by hand. A small amount of side play is normal; in-and-out play or wheel contact with the housing is not. Oil pooled in the intake or intercooler pipes points to worn seals.
7. 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.
8. 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.
9. 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.
10. Injectors and high-pressure fuel pump. Direct-injection engines rely on high-pressure pumps and precise injectors. Ask whether the injectors are original or updated and whether there were fuel pressure faults.
11. 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.
12. 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 S63B44T4

What should I check on a used BMW S63 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 S63 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.

You can ask for extra photos, a close-up of the code stamp or a short video before you order. 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 S63 Engines · Inspection certificate

What should I know about the BMW S63 engine?

BMW S63 4.4 twin-turbo V8 engines for M5, M6, M8 and X5 M. We list one version: S63B44 (4.4 liter (4,395 cc), 441 kW (600 HP), 2011 to 2023).

Because there is only one version, the code is easy to match. You still need the engine computer and wiring that suit your car.

The S63 family was used in chassis F90, F10, F06, F91, F95 and F96. 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.

See all S63 Engines

Which years were BMW S63 engines made?

BMW built the S63 engines we list from about 2011 to 2023. The S63B44 ran from 2011 to 2023.

They went into chassis F90, F10, F06, F91, F95 and F96. 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.

See all S63 Engines

Will the S63B44 engine fit my BMW F90 M5?

Yes, if your BMW F90 M5 was built with the S63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 441 kW (600 HP) in the F90 M5 from about 2011 to 2023.

In our records the S63B44 is the engine for the F90 M5, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F90 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 S63 Engines · Search S63B44 in the shop

How much is a replacement S63B44 engine for a BMW F10 M5?

A used S63B44 for the BMW F10 M5 costs from about 10.300 € to 15.600 € 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 S63B44 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 S63 Engines · Search S63B44 in the shop

Will the S63B44 engine fit my BMW F10 M5?

Yes, if your BMW F10 M5 was built with the S63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 441 kW (600 HP) in the F10 M5 from about 2011 to 2023.

In our records the S63B44 is the engine for the F10 M5, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F10 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 S63 Engines · Search S63B44 in the shop

How do I know a used S63B44 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. 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 S63B44, 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 S63 Engines · Search S63B44 in the shop

How long does delivery of an S63B44 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 S63 Engines · Search S63B44 in the shop

What comes with a used S63B44 engine?

Each S63B44 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 S63 Engines · Search S63B44 in the shop

How much does a used BMW S63B44 engine cost?

A used BMW S63B44 engine in our yard usually costs between 10.300 € and 15.600 €. 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 S63 Engines · Search S63B44 in the shop

Does a used S63B44 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 S63 Engines · Search S63B44 in the shop

Will the S63B44 engine fit my BMW F96 X6 M?

Yes, if your BMW F96 X6 M was built with the S63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 441 kW (600 HP) in the F96 X6 M from about 2011 to 2023.

Some F96 X6 M cars were built with a different engine: the S68B44. These look alike from the outside, so check the code on your engine or send us your VIN.

Your car has all-wheel drive or is an X model, so the sump, the oil pickup and some brackets can differ from the rear-drive cars. Tell us the full model so we send the right set-up.

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 S63 Engines · Search S63B44 in the shop

Delivery, warranty and payment

Before an S63B44T4 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.

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.

S63 engine guide · S63B44T4 engines for sale · All S63 engines · Send us your VIN