BMW built the N62B44 from 2001 to 2005. It is a 4.4 L naturally aspirated petrol V8 with 333 hp and 450 Nm, part of the N62 family. You will find it in the BMW E65 745i, BMW E60 545i, BMW E63 645Ci and BMW E53 X5 4.4i.
This guide is about the N62B44 specifically: its specification, the cars that use it, how it differs from the other N62 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our N62 guide.
- Capacity and layout: 4.4 L, V8, naturally aspirated
- Output: 333 hp and 450 Nm
- Production: 2001–2005
- Fitted to: 4 models across 4 chassis generations
- In our stock: 5 units from 3.488,00 €
N62B44 specifications
| Item | Value |
|---|---|
| Engine code | N62B44 |
| Family | N62 |
| Capacity | 4.4 L |
| Layout | V8 |
| Fuel | Petrol |
| Aspiration | Naturally aspirated |
| Power | 333 hp |
| Torque | 450 Nm |
| Specific output | 76 hp per litre |
| Production | 2001–2005 |
| Models | 4 |
The N62B44 is a 4.4 L V8 petrol engine, naturally aspirated, rated at 333 hp and 450 Nm. BMW built it from 2001 to 2005. That is about 76 hp and 102 Nm per litre, a strong figure for a road engine of its era. Within the N62 family, the N62B48 (367 hp) is more powerful, while the N62B36 (272 hp) and N62B40 (306 hp) are milder. It was fitted to the BMW E65 745i, BMW E60 545i, BMW E63 645Ci and BMW E53 X5 4.4i.
What the code N62B44 means
- N marks an N-series code, the generation of BMW engines introduced from 2001.
- 62 is the family number.
- B stands for petrol (from the German Benzin).
- 44 is the capacity in decilitres, so 4.4 litres.
Which BMW models use the N62B44
| Model | Generation | Built |
|---|---|---|
| BMW E65 745i | fourth 7 Series | 2001–2008 |
| BMW E60 545i | fifth 5 Series | 2003–2010 |
| BMW E63 645Ci | second 6 Series coupé | 2003–2010 |
| BMW E53 X5 4.4i | first X5 | 1999–2006 |
In the E65 fourth 7 Series (2001–2008), the N62B44 powered the 745i. We have 1 N62B44 unit from E65 donor cars. All E65 engines
In the E60 fifth 5 Series (2003–2010), the N62B44 powered the 545i. We have 1 N62B44 unit from E60 donor cars. All E60 engines
In the E63 second 6 Series coupé (2003–2010), the N62B44 powered the 645Ci. We have 1 N62B44 unit from E63 donor cars. All E63 engines
In the E53 first X5 (1999–2006), the N62B44 powered the X5 4.4i. We have 1 N62B44 unit from E53 donor cars. All E53 engines
N62B44 compared with other N62 versions
| Code | Capacity | Power | Torque | Years |
|---|---|---|---|---|
| N62B36 | 3.6 L | 272 hp | 360 Nm | 2001–2005 |
| N62B44 | 4.4 L | 333 hp | 450 Nm | 2001–2005 |
| N62B40 | 4.0 L | 306 hp | 390 Nm | 2005–2010 |
| N62B48 | 4.8 L | 367 hp | 490 Nm | 2005–2010 |
N62B44 or N62B40?
The N62B40 has 27 hp less than the N62B44 (306 against 333 hp), from 4.0 L instead of 4.4 L, and was built 2005–2010. 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.
N62B44 or N62B48?
The N62B48 has 34 hp more than the N62B44 (367 against 333 hp), from 4.8 L instead of 4.4 L, and was built 2005–2010. 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.
N62B44 or N62B36?
The N62B36 has 61 hp less than the N62B44 (272 against 333 hp), from 3.6 L instead of 4.4 L, and was built 2001–2005. 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 N62B44 problems
The N62B44 shares its weak points with the rest of the N62 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the N62 guide.
| Known fault | What to check |
|---|---|
| Valve stem seals | Watch the exhaust after a long idle; heavy smoke on the first press of the throttle is typical. |
| Alternator bracket gasket | Look for oil at the back of the valley. |
| Valve cover gaskets | Look for burnt oil on the manifolds. |
| Valvetronic motors and eccentric shaft sensors | Read the fault memory for Valvetronic codes. |
| Coolant transfer pipe | Pressure-test the cooling system. |
| Timing chain guides | Listen for rattle on a cold start. |
Timing chain guides. Guides wear on high-mileage engines.
N62B44 maintenance
- 5W-30 BMW Longlife-01, about 8 litres with filter.
- Oil every 10,000 to 15,000 km.
- Timing chains at the front, one per bank, with guides and tensioners.
Will the N62B44 fit my car?
Will the N62B44 fit my BMW E63 645Ci?
Yes, the BMW E63 645Ci left the factory with the N62B44, so an N62B44 from another car is the direct replacement. The second 6 Series coupé was built 2003–2010, and the N62B44 was produced 2001–2005, 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 E63 645Ci?
We have 1 N62B44 engine from E63 donor cars, priced from 5.595,00 €. 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.
N62B44 prices
Our N62B44 stock runs to 5 units, priced from 3.488,00 € to 5.706,00 € with a median of 5.586,00 €.
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.
N62B44 engines in stock
These N62B44 units are in our Hamburg yard right now. Each listing shows real photographs of the engine you receive, its mileage and what is fitted.
BMW E65 745i N62B44 Engine, Premium Grade5.569,00 €
BMW E60 545i N62B44 Engine, Premium Grade5.706,00 €
BMW E53 X5 4.4i N62B44 Engine, Premium Grade5.586,00 €BMW E65 745i N62B44 Engine, Premium Grade — 5.569,00 €, reduced from 6.160,00 €. It comes from a recorded donor car, and 6 units are available. Ask the desk for compression figures or extra photographs before you order.
BMW E60 545i N62B44 Engine, Premium Grade — 5.706,00 €, reduced from 6.160,00 €. It comes from a recorded donor car, and 9 units are available. We can confirm fitment against your VIN the same day.
BMW E53 X5 4.4i N62B44 Engine, Premium Grade — 5.586,00 €, reduced from 6.160,00 €. It comes from a recorded donor car, and 11 units are available. The listing shows every side of the engine and the fitted parts.
Buying a used N62B44: checklist
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Valvetronic motor and eccentric shaft sensor. The Valvetronic motor and its sensor cause limp-mode faults when they fail. Inspect the connector and the seal around the motor for oil.
- 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 N62B44
What should I replace when I fit a used N62B44 engine?
A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Check the spark plugs and the ignition coils, and make sure the fuel lines are clean and tight before you crank the engine. Fit a new oil filter and fresh oil of the grade BMW lists for this engine, and refill the coolant with the correct BMW antifreeze mix. Use new gaskets for the exhaust manifold, the intake and the sump plug, and check every hose clip before the first start.
Look at the engine mounts and the clutch or the torque converter while the engine is out. Old mounts can crack a new engine's brackets, and a worn clutch is much easier to change now.
Before the first start, turn the engine over without fuel until the oil pressure light goes out. Then let it idle, check for leaks, and drive gently for the first few hundred kilometres.
The warranty asks for fitting by a qualified mechanic and the correct oil, coolant and filters. Keep your receipts in case you ever need to make a claim.
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Which cars use the BMW N62B44 engine?
BMW fitted the N62B44 to the BMW E60 545i, BMW E65 745i and BMW E53 X5 4.4i. These cars were built with this engine from about 2001 to 2005.
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 N62 family are the N62B48 (367 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.
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What comes with a used N62B44 engine?
Each N62B44 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.
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Will the N62B44 engine fit my BMW E65 745i?
Yes, if your BMW E65 745i was built with the N62B44. BMW used this 4.4 liter (4,398 cc) petrol engine with 245 kW (333 HP) in the E65 745i from about 2001 to 2005.
In our records the N62B44 is the engine for the E65 745i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E65 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
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What is the BMW N62B44 engine?
The BMW N62B44 is a 4.4 liter (4,398 cc) petrol engine from the N62 family. It has a V8, DOHC, 32 valve layout with no turbo (naturally aspirated), and makes 245 kW (333 HP) with 450 Nm of torque. BMW built it from 2001 to 2005 and it meets the Euro 4 emission standard.
You find the N62B44 in the BMW E60 545i, BMW E65 745i and BMW E53 X5 4.4i. What we list: BMW N62 4.4 and 4.8 V8 engines for 545i, 750i and X5 4.8.
At Autowerke Engines every N62B44 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.
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Will the N62B44 engine fit my BMW E60 545i?
Yes, if your BMW E60 545i was built with the N62B44. BMW used this 4.4 liter (4,398 cc) petrol engine with 245 kW (333 HP) in the E60 545i from about 2001 to 2005.
In our records the N62B44 is the engine for the E60 545i, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E60 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
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Does a used N62B44 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.
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Can you check if an N62B44 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 N62B44, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW E60 545i, BMW E65 745i and BMW E53 X5 4.4i.
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.
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How much is a replacement N62B44 engine for a BMW E53 X5 4.4i?
A used N62B44 for the BMW E53 X5 4.4i costs from about 1.800 € to 2.950 € 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 N62B44 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.
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Is the BMW N62B44 a diesel or petrol engine?
The N62B44 is a petrol engine. It is a 4.4 liter (4,398 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.
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How much power and torque does the BMW N62B44 have?
From the factory the BMW N62B44 makes 245 kW (333 HP) and 450 Nm of torque. It is a 4.4 liter (4,398 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 N62B44 on our site lists its year and mileage. If you want more photos or a short video of a unit, ask the desk and we send them before you pay.
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How much does a used BMW N62B44 engine cost?
A used BMW N62B44 engine in our yard usually costs between 1.800 € and 2.950 €. 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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Will the N62B44 engine fit my BMW E53 X5 4.4i?
Yes, if your BMW E53 X5 4.4i was built with the N62B44. BMW used this 4.4 liter (4,398 cc) petrol engine with 245 kW (333 HP) in the E53 X5 4.4i from about 2001 to 2005.
Some E53 X5 4.4i cars were built with a different engine: the M62B44. 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.
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How do I know a used N62B44 engine is in good shape?
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. 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 N62B44, 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.
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What is the difference between the N62B44 and other N62 engines?
The N62B44 makes 245 kW (333 HP) and 450 Nm. The other N62 engines are: N62B48 with 270 kW (367 HP) and 490 Nm (2005 to 2010).
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.
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How much is a replacement N62B44 engine for a BMW E60 545i?
A used N62B44 for the BMW E60 545i costs from about 1.800 € to 2.950 € 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 N62B44 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 N62 Engines · Search N62B44 in the shop
How much is a replacement N62B44 engine for a BMW E65 745i?
A used N62B44 for the BMW E65 745i costs from about 1.800 € to 2.950 € 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 N62B44 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 N62 Engines · Search N62B44 in the shop
How long does delivery of an N62B44 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.
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Delivery, warranty and payment
Every N62B44 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.
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.
