The N63B44M is a 4.4 L petrol V8 from BMW's N63 family, built 2018–2026 and rated at 530 hp and 750 Nm. It powered the BMW G05 X5 M50i, BMW G07 X7 M50i, BMW M550i and BMW 750i.
This guide is about the N63B44M specifically: its specification, the cars that use it, how it differs from the other N63 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our N63 guide.
- Capacity and layout: 4.4 L, V8, twin-turbo
- Output: 530 hp and 750 Nm
- Production: 2018–2026
- Fitted to: 4 models across 2 chassis generations
- In our stock: 5 units from 6.822,00 € — N63B44M engines for sale
N63B44M specifications
| Item | Value |
|---|---|
| Engine code | N63B44M |
| Family | N63 |
| Capacity | 4.4 L |
| Layout | V8 |
| Fuel | Petrol |
| Aspiration | Twin-turbo |
| Power | 530 hp |
| Torque | 750 Nm |
| Specific output | 120 hp per litre |
| Production | 2018–2026 |
| Models | 4 |
Built from 2018 to 2026, the N63B44M displaces 4.4 L in a V8 layout and is twin-turbo. It produces 530 hp and 750 Nm on petrol. That is about 120 hp and 170 Nm per litre, a high specific output that reflects a performance-focused design. Within the N63 family, it is the most powerful version, while the N63B44 (407 hp), N63B44T2 (450 hp) and N63B44O1 (450 hp) are milder. It was fitted to the BMW G05 X5 M50i, BMW G07 X7 M50i, BMW M550i and BMW 750i.
What the code N63B44M means
- N marks an N-series code, the generation of BMW engines introduced from 2001.
- 63 is the family number.
- B stands for petrol (from the German Benzin).
- 44 is the capacity in decilitres, so 4.4 litres.
- M identifies the version or output stage.
Which BMW models use the N63B44M
| Model | Generation | Built |
|---|---|---|
| BMW G05 X5 M50i | fourth X5 | 2018– |
| BMW G07 X7 M50i | X7 | 2018– |
In the G05 fourth X5 (2018–), the N63B44M powered the X5 M50i. We have 1 N63B44M unit from G05 donor cars. All G05 engines
In the G07 X7 (2018–), the N63B44M powered the X7 M50i. We have 1 N63B44M unit from G07 donor cars. All G07 engines
N63B44M compared with other N63 versions
| Code | Capacity | Power | Torque | Years |
|---|---|---|---|---|
| N63B44 | 4.4 L | 407 hp | 600 Nm | 2008–2013 |
| N63B44T2 | 4.4 L | 450 hp | 650 Nm | 2012–2018 |
| N63B44O1 | 4.4 L | 450 hp | 650 Nm | 2012–2018 |
| N63B44T3 | 4.4 L | 462 hp | 650 Nm | 2016–2026 |
| N63B44M | 4.4 L | 530 hp | 750 Nm | 2018–2026 |
N63B44M or N63B44T3?
The N63B44T3 has 68 hp less than the N63B44M (462 against 530 hp), from the same 4.4 L, and was built 2016–2026. 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.
N63B44M or N63B44T2?
The N63B44T2 has 80 hp less than the N63B44M (450 against 530 hp), from the same 4.4 L, and was built 2012–2018. 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.
N63B44M or N63B44O1?
The N63B44O1 has 80 hp less than the N63B44M (450 against 530 hp), from the same 4.4 L, and was built 2012–2018. 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 N63B44M problems
The N63B44M shares its weak points with the rest of the N63 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the N63 guide.
| Known fault | What to check |
|---|---|
| Oil consumption from valve stem seals | Ask for oil consumption figures and check whether the seals have been replaced. |
| Piezo injectors (early N63) | Read misfire counters and check injector revisions. |
| Timing chain stretch | Read the camshaft timing values and listen at cold start. |
| Turbo coolant and oil lines | Look for coolant loss and oil smoke. |
| Crankcase ventilation | Check for smoke and oil in the intake. |
| Battery drain | Check that the cooling pump after-run works. |
Timing chain stretch. Chains stretch on high-mileage engines, especially with long oil intervals.
N63B44M maintenance
- 5W-30 BMW Longlife-01, about 8.5 litres with filter.
- Oil every 10,000 km at most; BMW's own updates shortened the interval.
- Timing chains at the front, one per bank.
Will the N63B44M fit my car?
Will the N63B44M fit my BMW G05 X5 M50i?
Yes, the BMW G05 X5 M50i left the factory with the N63B44M, so an N63B44M from another car is the direct replacement. The fourth X5 was built 2018–, and the N63B44M was produced 2018–2026, 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 G05 X5 M50i?
We have 1 N63B44M engine from G05 donor cars, priced from 11.080,00 €. 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 N63B44M fit my BMW G07 X7 M50i?
For the BMW G07 X7 M50i, the N63B44M is the factory engine and the one to order. The X7 was built 2018–, and the N63B44M was produced 2018–2026, 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 G07 X7 M50i?
We have 1 N63B44M engine from G07 donor cars, priced from 11.031,00 €. 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.
N63B44M prices
Our N63B44M stock runs to 5 units, priced from 6.822,00 € to 11.080,00 € with a median of 11.049,00 €.
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.
N63B44M engines in stock
Here is a selection of N63B44M engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.
BMW G07 X7 M50i N63B44M Engine, Premium Grade11.031,00 €
BMW M550i N63B44M Engine, Premium Grade11.058,00 €
BMW 750i N63B44M Engine, Premium Grade11.049,00 €BMW G07 X7 M50i N63B44M Engine, Premium Grade — 11.031,00 €, reduced from 11.600,00 €. It comes from a recorded donor car, and 11 units are available. We can confirm fitment against your VIN the same day.
BMW M550i N63B44M Engine, Premium Grade — 11.058,00 €, reduced from 11.600,00 €. It comes from a recorded donor car, and 18 units are available. The listing shows every side of the engine and the fitted parts.
BMW 750i N63B44M Engine, Premium Grade — 11.049,00 €, reduced from 11.600,00 €. It comes from a recorded donor car, and 6 units are available. The listing shows every side of the engine and the fitted parts.
Buying a used N63B44M: checklist
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Timing chain noise. Listen for a rattle at the front of the engine for the first seconds after a cold start. On an engine that cannot be run, look at the chain guides through the oil filler or with the valve cover off.
- VANOS operation. Rough idle, a rattle from the front of the head and a loss of torque at low revs point to VANOS seals or solenoids. These are serviceable parts and are easier to renew with the engine out.
- 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.
- 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.
- 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 N63B44M
What should I check on a used BMW N63 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 N63 petrol engine, a fitter usually checks the spark plugs, the coils, the timing side and the oil seals. These parts are easy to check before fitting and easy to change if needed.
If you want more photos or a short video of a unit, ask the desk and we send them before you pay. An inspection certificate can travel with the order on request.
Once fitted, change the oil and filter early and drive gently at first. Report any problem right away so the warranty stays valid.
See all N63 Engines · Inspection certificate
Will the N63B44 engine fit my BMW F06 650i?
Yes, if your BMW F06 650i was built with the N63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 330 kW (450 HP) in the F06 650i from about 2012 to 2019.
In our records the N63B44 is the engine for the F06 650i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your F06 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 N63 Engines · Search N63B44 in the shop
How much is a replacement N63B44 engine for a BMW F15 X5 xDrive50i?
A used N63B44 for the BMW F15 X5 xDrive50i costs from about 3.850 € to 5.950 € 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 N63B44 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 N63 Engines · Search N63B44 in the shop
What should I replace when I fit a used N63B44T3 engine?
A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Clean the intercooler and the intake pipes, and fill the turbo oil feed with clean oil before the first start, so the turbo never runs dry. 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 N63 Engines · Search N63B44T3 in the shop
Does a used N63B44T3 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 N63 Engines · Search N63B44T3 in the shop
How much is a replacement N63B44 engine for a BMW F10 550i?
A used N63B44 for the BMW F10 550i costs from about 3.850 € to 5.950 € 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 N63B44 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 N63 Engines · Search N63B44 in the shop
How much power and torque does the BMW N63B44T3 have?
From the factory the BMW N63B44T3 makes 390 kW (530 HP) and 750 Nm of torque. It is a 4.4 liter (4,395 cc) V8, DOHC, 32 valve petrol engine with twin turbochargers.
Because it is turbocharged, the torque comes in low in the rev range, which makes the car feel strong in everyday driving. A healthy turbo, a clean intercooler and tight boost pipes 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 N63B44T3 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 N63 Engines · Search N63B44T3 in the shop
How do I know a used N63B44 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. 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 N63B44, 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 N63 Engines · Search N63B44 in the shop
Which years were BMW N63 engines made?
BMW built the N63 engines we list from about 2012 to 2026. The N63B44 ran from 2012 to 2019. The N63B44T3 ran from 2018 to 2026.
They went into chassis F10, G12, F15, G30, F06, G05, G11 and G16. 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.
How much does a used BMW N63B44 engine cost?
A used BMW N63B44 engine in our yard usually costs between 3.850 € and 5.950 €. 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.
See all N63 Engines · Search N63B44 in the shop
How much is a replacement N63B44 engine for a BMW F06 650i?
A used N63B44 for the BMW F06 650i costs from about 3.850 € to 5.950 € 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 N63B44 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 N63 Engines · Search N63B44 in the shop
Is the BMW N63B44 a diesel or petrol engine?
The N63B44 is a petrol engine. It is a 4.4 liter (4,395 cc) V8, DOHC, 32 valve unit with twin turbochargers, and it was built to the Euro 6 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 N63 Engines · Search N63B44 in the shop
Delivery, warranty and payment
Before an N63B44M 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.
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.
N63 engine guide · N63B44M engines for sale · All N63 engines · Send us your VIN
