BMW G11 and G12 7 Series engines: every engine, fitment and price

The G11 and long-wheelbase G12 7 Series were built from 2015 to 2022. Engines included the B58, N63 and N74 petrols and the B57 diesel.

In total, 10 model and engine combinations are listed for the BMW G11 and G12 7 Series in our data, using 4 engine families: N63, B57, B58 and N73 and N74. Production covered 2015–2022. We currently hold 265 engines that suit these cars.

Every BMW G11 and G12 7 Series engine at a glance

BMW G11 and G12 7 Series: petrol engines

N63 in the BMW G11 and G12 7 Series

The G11 750i uses the N63B44T2, a 4.4 L V8 rated at 450 hp and 650 Nm, built 2012–2018.

The G11 750i uses the N63B44T3, a 4.4 L V8 rated at 462 hp and 650 Nm, built 2016–2026.

BMW launched the N63 in 2008 in the X6 xDrive50i with a 'hot-V' layout, piezo direct injection and double VANOS.

On the N63, our workshop watches for oil consumption from valve stem seals, piezo injectors (early n63) and timing chain stretch. Prefer N63TU and later engines where the car allows it. Check the version letter on the engine code (B44A, B44B, B44C, B44D) before ordering.

Read our full N63 guide

We have 49 N63 engines that suit the BMW G11 and G12 7 Series, from 3.990,00 €.

B58 in the BMW G11 and G12 7 Series

G11 740i: B58B30M0, 3.0 L, 340 hp and 450 Nm (2016–2023).

BMW launched the B58 in 2015 with a closed-deck block, twin-scroll turbo and integrated manifold.

On the B58, our workshop watches for coolant leaks, oil filter housing and pcv valve. Check the version (B58B30M0, M1 or TU) before ordering.

Read our full B58 guide

We have 112 B58 engines that suit the BMW G11 and G12 7 Series, from 3.112,00 €.

N73 and N74 in the BMW G11 and G12 7 Series

G12 M760Li: N74B60, 6.6 L, 610 hp and 800 Nm (2009–2022).

The G12 M760Li uses the N74B66, a 6.6 L V12 rated at 610 hp and 850 Nm, built 2016–2022. See every N74B66 in stock.

BMW launched the N73 in 2003 with Valvetronic and direct injection on a V12.

On the N73 and N74, our workshop watches for ignition coils and spark plugs, injectors and coolant leaks. Check whether the engine is BMW or Rolls-Royce specification before ordering.

Read our full N73 and N74 guide

We have 22 N73 and N74 engines that suit the BMW G11 and G12 7 Series, from 8.291,00 €.

BMW G11 and G12 7 Series: diesel engines

B57 in the BMW G11 and G12 7 Series

G11 730d: B57D30, 3.0 L, 265 hp and 620 Nm (2015–2026). See every B57D30 in stock.

The G11 730d uses the B57D30A, a 3.0 L inline-6 rated at 265 hp and 620 Nm, built 2015–2026. See every B57D30A in stock.

The G11 740d uses the B57D30T, a 3.0 L inline-6 rated at 320 hp and 680 Nm, built 2016–2020. See every B57D30T in stock.

For the G11 750d, BMW fitted the B57D30S — 3.0 L, quad-turbo, 400 hp. See every B57D30S in stock.

G11 740d: B57D30B, 3.0 L, 340 hp and 700 Nm (2017–2026). See every B57D30B in stock.

BMW launched the B57 in 2015 to replace the N57.

On the B57, our workshop watches for egr cooler, diesel particulate filter and turbo actuators. Check the version (B57D30A, B, C or S) before ordering.

Read our full B57 guide

We have 64 B57 engines that suit the BMW G11 and G12 7 Series, from 753,00 €.

Will it fit? BMW G11 and G12 7 Series engine questions

Will the N63B44T2 fit my BMW G11 750i?

Yes, the BMW G11 750i left the factory with the N63B44T2, so an N63B44T2 from another car is the direct replacement. The sixth 7 Series was built 2015–2022, and the N63B44T2 was produced 2012–2018, 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 G11 750i?

We have 1 N63B44T2 engine from G11 donor cars, priced from 8.160,00 €. 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 B57D30 fit my BMW G11 730d?

For the BMW G11 730d, the B57D30 is the factory engine and the one to order. The sixth 7 Series was built 2015–2022, and the B57D30 was produced 2015–2026, 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 G11 730d?

We have 64 B57D30 engines from G11 donor cars, priced from 753,00 € to 9.790,00 €. 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 B57D30T fit my BMW G11 740d?

Yes, the BMW G11 740d left the factory with the B57D30T, so a B57D30T from another car is the direct replacement. The sixth 7 Series was built 2015–2022, and the B57D30T was produced 2016–2020, 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 G11 740d?

We have 1 B57D30T engine from G11 donor cars, priced from 7.569,00 €. 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 B58B30M0 fit my BMW G11 740i?

Yes, the BMW G11 740i left the factory with the B58B30M0, so a B58B30M0 from another car is the direct replacement. The sixth 7 Series was built 2015–2022, and the B58B30M0 was produced 2016–2023, 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 G11 740i?

We have 1 B58B30M0 engine from G11 donor cars, priced from 3.112,00 €. 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 B57D30S fit my BMW G11 750d?

The B57D30S is the original engine for the BMW G11 750d, which makes it the straightforward choice. The sixth 7 Series was built 2015–2022, and the B57D30S was produced 2016–2020, 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 G11 750d?

We have 1 B57D30S engine from G11 donor cars, priced from 9.790,00 €. 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 N74B60 fit my BMW G12 M760Li?

The N74B60 is the original engine for the BMW G12 M760Li, which makes it the straightforward choice. The sixth 7 Series long-wheelbase was built 2015–2022, and the N74B60 was produced 2009–2022, 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 G12 M760Li?

We do not have an N74B60 on the shelf for the G12 M760Li at the moment. Units arrive regularly; send us your VIN and we will tell you when the next one is ready and what it will cost, including delivery.

Engine swap questions for the BMW G11 and G12 7 Series

Owners often ask whether a more powerful engine from another BMW G11 and G12 7 Series model can be fitted. These answers show what each upgrade involves.

Can I fit the N74B66 from the G12 M760Li into a G11 750i?

It is a conversion rather than a replacement. The N74B66 is a V12 and the N63B44T3 a V8, so mounts, sump, cooling, exhaust, wiring and ECU all change. The gain is 148 hp and 200 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N63B44T3 from the G11 750i into a G11 730d?

It is a full conversion: the N63B44T3 runs on petrol and the B57D30A on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 197 hp and 30 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N74B66 from the G12 M760Li into a G11 730d?

It is a full conversion: the N74B66 runs on petrol and the B57D30A on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 345 hp and 230 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N63B44T3 from the G11 750i into a G11 740d?

It is a full conversion: the N63B44T3 runs on petrol and the B57D30B on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 122 hp and 0 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N74B66 from the G12 M760Li into a G11 740d?

It is a full conversion: the N74B66 runs on petrol and the B57D30B on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 270 hp and 150 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N63B44T3 from the G11 750i into a G11 740i?

It is a conversion rather than a replacement. The N63B44T3 is a V8 and the B58B30M0 an inline-6, so mounts, sump, cooling, exhaust, wiring and ECU all change. The gain is 122 hp and 200 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N74B66 from the G12 M760Li into a G11 740i?

It is a conversion rather than a replacement. The N74B66 is a V12 and the B58B30M0 an inline-6, so mounts, sump, cooling, exhaust, wiring and ECU all change. The gain is 270 hp and 400 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N74B66 from the G12 M760Li into a G11 750d?

It is a full conversion: the N74B66 runs on petrol and the B57D30S on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 210 hp and 90 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Can I fit the N63B44T3 from the G11 750i into a G11 750d?

It is a full conversion: the N63B44T3 runs on petrol and the B57D30S on diesel, so the fuel system, wiring, ECU, instrument coding and usually the gearbox change too. The gain is 62 hp and 0 Nm. In Germany and most of Europe a swap must be inspected and registered; check with your testing station first.

Fitment and swap notes for the BMW G11 and G12 7 Series

• The M760i uses the N74.
• The 740i uses the B58.

Engines from the same family usually share mounts and gearbox bolt patterns, but wiring, ECU, sump and cooling differ between versions. Moving to a different family is a conversion, not a replacement.

N63: Remaps add 100 hp or more on TU engines. Heat management is the limit, so upgraded cooling is part of any serious build.

B57: Remaps add around 50 hp. The B57 is popular for Defender conversions.

B58: Remaps add 80 to 100 hp; it is the base for many swaps.

N73 and N74: Remaps add power to the N74; most owners keep the engine standard.

Known problems by engine in the BMW G11 and G12 7 Series

N63

• 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.

B57

• EGR cooler. Check the recall status.
• Diesel particulate filter. Read the soot load.
• Turbo actuators. Check for boost faults.

B58

• Coolant leaks. Check for coolant loss.
• Oil filter housing. Check below the housing.
• PCV valve. Look for oil in the intake.

N73 and N74

• Ignition coils and spark plugs. Read misfire counters.
• Injectors. Read injector corrections.
• Coolant leaks. Pressure-test the system.
• Turbo oil lines (N74). Look for oil smoke.

How to identify the right engine for your BMW G11 and G12 7 Series

Start with the VIN. The last seven characters identify your car in BMW's systems, and from them we can confirm the engine code, the production date, the gearbox and whether the car has xDrive. That is the only reliable way to order.

Next, check the stamp on the block. On most BMW four- and six-cylinder engines it sits on the left side of the block below the intake; on V engines it is usually at the back near the gearbox. The stamp shows the engine code and serial number.

Finally, compare the ancillaries. Two engines with the same code can carry different turbos, injectors, manifolds or sensors depending on the model and market. Our listings show what is fitted to each unit.

BMW G11 and G12 7 Series engine prices

Our BMW G11 and G12 7 Series engine stock runs to 265 units, priced from 753,00 € to 12.037,00 € with a median of 5.005,00 €.

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.

BMW G11 and G12 7 Series engine prices by model year

Engines from 2010–2014 have a median of 4.968,00 €, while units from 2020–2024 sit at 4.921,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

BMW G11 and G12 7 Series engine 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.

BMW G11 and G12 7 Series engines in stock now

These BMW G11 and G12 7 Series engine 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 G11 740i B58B30 Engine 2018, 141,800 km4.802,00 €BMW G11 740i B58B30 Engine 2018, 197,100 km4.838,00 €BMW G11 730d B57D30A Engine 2016, 35,500 km5.596,00 €BMW G12 M760Li N74B66 Engine 2017, 40,000 km9.356,00 €BMW G12 M760Li N74B66 Engine 2021, 86,300 km11.813,00 €BMW G11 740i B58B30 Engine 2015, 147,600 km5.651,00 €BMW G11 740i B58B30 Engine 2019, 132,500 km4.988,00 €BMW G11 740i B58B30 Engine 2020, 164,900 km4.958,00 €BMW G12 750i N63B44 Engine 2014, 47,100 km4.554,00 €BMW G11 740i B58B30 Engine 2018, 105,600 km5.511,00 €BMW G11 740i B58B30 Engine 2018, 80,800 km5.066,00 €BMW G11 740i B58B30 Engine 2020, 154,200 km5.232,00 €

BMW G11 740i B58B30 Engine 2018, 141,800 km — 4.802,00 €, reduced from 6.000,00 €. It comes from a 2018 donor car with 141,800 km, and 25 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW G11 740i B58B30 Engine 2018, 197,100 km — 4.838,00 €, reduced from 5.650,00 €. It comes from a 2018 donor car with 197,100 km, and 16 units are available. The listing shows every side of the engine and the fitted parts.

BMW G11 730d B57D30A Engine 2016, 35,500 km — 5.596,00 €, reduced from 6.700,00 €. It comes from a 2016 donor car with 35,500 km, and 17 units are available. The listing shows every side of the engine and the fitted parts.

BMW G12 M760Li N74B66 Engine 2017, 40,000 km — 9.356,00 €, reduced from 10.150,00 €. It comes from a 2017 donor car with 40,000 km, and 7 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW G12 M760Li N74B66 Engine 2021, 86,300 km — 11.813,00 €, reduced from 13.050,00 €. It comes from a 2021 donor car with 86,300 km, and 7 units are available. The listing shows every side of the engine and the fitted parts.

BMW G11 740i B58B30 Engine 2015, 147,600 km — 5.651,00 €, reduced from 6.250,00 €. It comes from a 2015 donor car with 147,600 km, and 17 units are available. We can confirm fitment against your VIN the same day.

BMW G11 740i B58B30 Engine 2019, 132,500 km — 4.988,00 €, reduced from 5.750,00 €. It comes from a 2019 donor car with 132,500 km, and 21 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW G11 740i B58B30 Engine 2020, 164,900 km — 4.958,00 €, reduced from 6.100,00 €. It comes from a 2020 donor car with 164,900 km, and 21 units are available. The listing shows every side of the engine and the fitted parts.

BMW G12 750i N63B44 Engine 2014, 47,100 km — 4.554,00 €, reduced from 5.650,00 €. It comes from a 2014 donor car with 47,100 km, and 16 units are available. We can confirm fitment against your VIN the same day.

BMW G11 740i B58B30 Engine 2018, 105,600 km — 5.511,00 €, reduced from 6.200,00 €. It comes from a 2018 donor car with 105,600 km, and 13 units are available. The listing shows every side of the engine and the fitted parts.

BMW G11 740i B58B30 Engine 2018, 80,800 km — 5.066,00 €, reduced from 6.050,00 €. It comes from a 2018 donor car with 80,800 km, and 8 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW G11 740i B58B30 Engine 2020, 154,200 km — 5.232,00 €, reduced from 6.300,00 €. It comes from a 2020 donor car with 154,200 km, and 19 units are available. Ask the desk for compression figures or extra photographs before you order.

Buying checklist for a BMW G11 and G12 7 Series engine

1. Confirm the exact engine code. Read the code stamped on the block and compare it with the code for your car. Send us the last seven characters of the VIN and we confirm the match before anything is paid.
2. 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. Compression or leak-down figures. Even compression across all cylinders tells you more than mileage. Ask for the figures, not just a pass or fail, and compare the highest and lowest readings: a spread above 10 to 15 percent deserves a question.
4. 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. 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. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
12. Injector correction values. On a diesel that can be run before removal, the injector correction values show whether one injector is delivering more or less fuel than the others. Large deviations mean an injector is on its way out.
13. Particulate filter and EGR history. Short-trip diesels clog their DPF and EGR systems. The engine may be fine, but ask whether the donor car had DPF warnings, and plan to clean or check your own filter before fitting.
14. 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.
15. Gearbox-end timing chain. On this engine the timing chain sits at the gearbox end, so replacing it normally means removing the engine. If the chain has not been replaced, the time to do it is before the engine goes into your car.
16. 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.
17. 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.
18. 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.
19. 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.
20. 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.
21. Both cylinder banks and both ECUs. V12 engines often use separate management for each bank. Read faults from both and compare compression across all twelve cylinders.

Fitting an engine to your BMW G11 and G12 7 Series

1. Compare the engines side by side. Put the replacement next to the old engine and compare sensors, brackets, connectors, the sump, the starter and the flywheel or flexplate. Note anything that must be transferred.
2. Transfer the parts that differ. Move the parts that are specific to your car, such as the engine harness on some models, the sump on xDrive cars or the air conditioning compressor bracket. Use new seals and gaskets for everything you move.
3. Replace the rear main seal and drive parts. With the engine out, the rear crankshaft seal is easy to reach. Fit a new one, inspect the flywheel and clutch on manual cars or the converter seal on automatics.
4. Renew the cooling system. Most engine failures start with cooling. Fit a new water pump, thermostat and hoses, check the radiator and fan, and use the correct coolant.
5. Fit new engine mounts. Old mounts transfer vibration and can let the engine move enough to damage hoses. They are cheap and easy to replace with the engine out.
6. Inspect or replace the timing chain parts. Look at the guides and tensioner. On high-mileage engines, replacing them now costs far less than doing it later.
7. Replace the rear timing chain if in doubt. On engines with the chain at the gearbox end, chain work needs the engine out. If the history is unknown, replace the chain, guides and tensioner before fitting.
8. Prepare the turbo. Fit new oil feed and return seals, clean the intercooler and pipes of any oil or debris from the old engine, and prime the turbo with oil before starting.
9. Code the injectors and bleed the fuel. Enter the injector correction codes into the ECU, check the glow plugs and bleed the fuel system so the engine does not crank dry.
10. Check the particulate filter. If the old engine failed with oil or coolant entering the exhaust, the DPF may be contaminated. Check its back-pressure before relying on it.
11. Clean the intake. If the old engine failed internally, debris can be in the intake or intercooler. Clean them so nothing reaches the new engine.
12. Fill with the right oil and prime it. Fill with new oil of the correct specification and a new filter. Crank with the fuel and ignition disabled until oil pressure builds.
13. Coding and adaptations. On modern BMWs, the engine ECU must be matched to the car's immobiliser (CAS, FEM or BDC). Reset adaptations, register the battery and clear faults with diagnostic software.
14. Reset VANOS adaptations. Clear the VANOS adaptations so the ECU learns the camshaft positions of the new engine.
15. Teach the Valvetronic limit stops. Run the Valvetronic learning routine so the ECU knows the eccentric shaft limits.
16. First start and leak check. Start the engine, let it idle and watch oil pressure, temperature and fault codes. Check for leaks and bleed the cooling system.
17. First 1,000 km. Drive gently for the first few hundred kilometres, vary the engine speed and avoid full load. Change the oil and filter after about 1,000 km to remove any assembly debris.

Diagnosing engine trouble in a BMW G11 and G12 7 Series

If your current engine is showing one of these symptoms, this table helps you judge whether it can be repaired or whether a replacement engine is the better route.

Knocking from the bottom of the engine. A deep knock that rises with engine speed usually means worn rod or main bearings. Stop driving: bearing failure ends with a broken connecting rod. A used engine is normally the most economical fix once the bottom end is damaged.

Overheating or losing coolant. Coolant loss without visible leaks points to a head gasket or a cracked head; visible leaks point to the water pump, hoses, thermostat housing or expansion tank. Overheating should be fixed before it warps the head.

White smoke that smells sweet. Coolant burning in the cylinders, from a head gasket, a cracked head or, on diesels, a leaking EGR cooler. Check the coolant level and look for oil in the coolant.

Blue smoke. Oil burning in the cylinders. A puff on start-up points to valve stem seals; constant smoke under load points to piston rings or, on turbo engines, turbo seals.

Rough idle or misfire. Ignition coils, spark plugs, injectors and vacuum leaks are the usual causes. A misfire on one cylinder that moves when you swap coils is a coil; one that stays is a plug, injector or compression problem.

Loss of power. Start with the simple things: air filter, boost leaks on turbo engines, fuel pressure and fault codes. A gradual loss with poor compression on a test points to internal wear.

Rattle for a few seconds after a cold start. The classic sign of a weak timing chain tensioner or stretched chain. It must be checked quickly: a chain that jumps a tooth can bend valves.

Rattle or whine from the gearbox end. On engines with the timing chain at the rear, a rattle or whine from the back of the engine is the warning sign of chain stretch or guide wear.

Whistle, loss of boost or limp mode. A split charge pipe, a sticking wastegate or worn turbo bearings. Check the pipes first, then the turbo shaft for play.

Black smoke under acceleration. Too much fuel for the air available: boost leaks, a sticking EGR valve, a dirty air mass meter or a leaking injector.

Hard starting when cold. Glow plugs or the glow plug control unit. On older diesels, also check the injection pump and fuel lines for air leaks.

Particulate filter warning. Short trips stop the DPF from regenerating. A long motorway run often clears it; a filter that keeps blocking may be covering an injector, EGR or turbo problem.

Poor low-down torque and uneven idle. VANOS seals or solenoids. The engine may run well at high revs but feel flat and lumpy at low speed.

Limp mode with a Valvetronic fault. The Valvetronic motor, its eccentric shaft sensor or the wiring. The engine runs on a reduced throttle until it is repaired.

Long cranking before the engine starts. On direct-injection engines, a weak high-pressure fuel pump or leaking injector lets pressure drop when the engine is off.

Repair or replace the engine in your BMW G11 and G12 7 Series?

Repair makes sense when the fault is outside the engine or in a part that can be replaced without opening it: sensors, coils, injectors, gaskets, the water pump or a turbo. Replacement makes sense when the bottom end, the crankshaft, the bores or the head are damaged, because rebuilding an engine properly costs more than a good used unit.

Timing chain work on the engine needs the engine removed. When the chain has failed and damaged valves or pistons, a replacement engine with a sound chain is often the same price as the repair.

Ask your workshop for a written diagnosis before deciding. A compression test, an oil analysis and a borescope inspection take an hour or two and remove most of the guesswork.

Delivery, warranty and payment

Every BMW G11 and G12 7 Series engine we sell is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped before it leaves Hamburg. You receive photographs of the packed engine and a tracking number.

Door-to-door delivery is included to the address you give at checkout. Typical delivery takes three to five working days within Germany and neighbouring countries and five to ten working days to the rest of Europe and the UK.

A 12-month warranty covers eligible internal failure when the engine is fitted by a qualified workshop with new fluids and filters. You can pay by card, bank transfer or crypto and receive the invoice by email straight away.

We deliver BMW G11 and G12 7 Series engines from Hamburg to customers across Europe and beyond. Typical door-to-door times and customs status:

Times are typical for pallet delivery after dispatch and can vary with holidays and remote addresses. Business buyers in the EU with a valid VAT number can order without German VAT.

Questions about BMW G11 and G12 7 Series engines

Will the B57D30A engine fit my BMW G11 730d?

Yes, if your BMW G11 730d was built with the B57D30A. BMW used this 3.0 liter (2,993 cc) diesel engine with 195 kW (265 HP) in the G11 730d from about 2015 to 2024.

In our records the B57D30A is the engine for the G11 730d, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G11 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 B57 Engines · Search B57D30A in the shop

How much is a replacement B57D30A engine for a BMW G11 730d?

A used B57D30A for the BMW G11 730d costs from about 3.650 € to 5.700 € 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 B57D30A 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 B57 Engines · Search B57D30A in the shop

Will the B57D30B engine fit my BMW G11 740d?

Yes, if your BMW G11 740d was built with the B57D30B. BMW used this 3.0 liter (2,993 cc) diesel engine with 250 kW (340 HP) in the G11 740d from about 2016 to 2024.

In our records the B57D30B is the engine for the G11 740d, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G11 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 B57 Engines · Search B57D30B in the shop

How much is a replacement B57D30B engine for a BMW G11 740d?

A used B57D30B for the BMW G11 740d costs from about 4.350 € to 6.700 € 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 B57D30B 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 B57 Engines · Search B57D30B in the shop

Will the B58B30 engine fit my BMW G11 740i?

Yes, if your BMW G11 740i was built with the B58B30. BMW used this 3.0 liter (2,998 cc) petrol engine with 250 kW (340 HP) in the G11 740i from about 2015 to 2020.

In our records the B58B30 is the engine for the G11 740i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G11 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 B58 Engines · Search B58B30 in the shop

How much is a replacement B58B30 engine for a BMW G11 740i?

A used B58B30 for the BMW G11 740i costs from about 4.150 € to 6.450 € 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 B58B30 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 B58 Engines · Search B58B30 in the shop

Will the N63B44 engine fit my BMW G12 750i?

Yes, if your BMW G12 750i was built with the N63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 330 kW (450 HP) in the G12 750i from about 2012 to 2019.

In our records the N63B44 is the engine for the G12 750i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G12 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 G12 750i?

A used N63B44 for the BMW G12 750i 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

Will the N63B44T3 engine fit my BMW G11 750i?

Yes, if your BMW G11 750i was built with the N63B44T3. BMW used this 4.4 liter (4,395 cc) petrol engine with 390 kW (530 HP) in the G11 750i from about 2018 to 2026.

In our records the N63B44T3 is the engine for the G11 750i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G11 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 N63B44T3 in the shop

How much is a replacement N63B44T3 engine for a BMW G11 750i?

A used N63B44T3 for the BMW G11 750i costs from about 5.000 € to 7.700 € 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 N63B44T3 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 N63B44T3 in the shop

Will the N74B66 engine fit my BMW G12 M760Li?

Yes, if your BMW G12 M760Li was built with the N74B66. BMW used this 6.6 liter (6,592 cc) petrol engine with 448 kW (610 HP) in the G12 M760Li from about 2009 to 2022.

In our records the N74B66 is the engine for the G12 M760Li, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G12 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 N74 Engines · Search N74B66 in the shop

How much is a replacement N74B66 engine for a BMW G12 M760Li?

A used N74B66 for the BMW G12 M760Li 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 N74B66 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 N74 Engines · Search N74B66 in the shop

Questions about the engines in the BMW G11 and G12 7 Series

Will the N63B44 engine fit my BMW F10 550i?

Yes, if your BMW F10 550i was built with the N63B44. BMW used this 4.4 liter (4,395 cc) petrol engine with 330 kW (450 HP) in the F10 550i from about 2012 to 2019.

In our records the N63B44 is the engine for the F10 550i, 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 N63 Engines · Search N63B44 in the shop

Will the N63B44T3 engine fit my BMW G30 M550i?

Yes, if your BMW G30 M550i was built with the N63B44T3. BMW used this 4.4 liter (4,395 cc) petrol engine with 390 kW (530 HP) in the G30 M550i from about 2018 to 2026.

Some G30 M550i cars were built with a different engine: the B58B30M1. These look alike from the outside, so check the code on your engine or send us your VIN.

Also tell us if your G30 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 N63B44T3 in the shop

How much is a replacement N63B44T3 engine for a BMW G16 M850i?

A used N63B44T3 for the BMW G16 M850i costs from about 5.000 € to 7.700 € 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 N63B44T3 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 N63B44T3 in the shop

Will the B58B30M1 engine fit my BMW G20 M340i?

Yes, if your BMW G20 M340i was built with the B58B30M1. BMW used this 3.0 liter (2,998 cc) petrol engine with 275 kW (374 HP) in the G20 M340i from about 2019 to 2026.

In our records the B58B30M1 is the engine for the G20 M340i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G20 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 B58 Engines · Search B58B30M1 in the shop

How do I know a used B57D30B 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 diesel like the B57D30B, a careful fitter will also look at the injectors, the turbo shaft play and the oil in the intake 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 B57 Engines · Search B57D30B in the shop

How much is a replacement B58B30M1 engine for a BMW G42 M240i?

A used B58B30M1 for the BMW G42 M240i costs from about 5.200 € to 7.950 € 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 B58B30M1 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 B58 Engines · Search B58B30M1 in the shop

What is the difference between the B58B30M1 and other B58 engines?

The B58B30M1 makes 275 kW (374 HP) and 500 Nm. The other B58 engines are: B58B30 with 250 kW (340 HP) and 500 Nm (2015 to 2020).

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 B58 Engines · Search B58B30M1 in the shop

Will the B57D30A engine fit my BMW G05 X5 xDrive30d?

Yes, if your BMW G05 X5 xDrive30d was built with the B57D30A. BMW used this 3.0 liter (2,993 cc) diesel engine with 195 kW (265 HP) in the G05 X5 xDrive30d from about 2015 to 2024.

In our records the B57D30A is the engine for the G05 X5 xDrive30d, which makes the match simple. Still, check the code on your old 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 B57 Engines · Search B57D30A in the shop

What comes with a used B57D30B engine?

Each B57D30B 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 B57 Engines · Search B57D30B in the shop

What should I check on a used BMW B58 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 a B58 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 B58 Engines · Inspection certificate

Will the B57D30A engine fit my BMW G30 530d?

Yes, if your BMW G30 530d was built with the B57D30A. BMW used this 3.0 liter (2,993 cc) diesel engine with 195 kW (265 HP) in the G30 530d from about 2015 to 2024.

In our records the B57D30A is the engine for the G30 530d, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G30 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 B57 Engines · Search B57D30A in the shop

What should I replace when I fit a used B58B30 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. 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. Change the drive belt, the thermostat and the water pump seals if they look tired, because they are cheap while the engine is out.

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 B58 Engines · Search B58B30 in the shop

How do I know a used N63B44T3 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. 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 N63B44T3, 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 N63B44T3 in the shop

Glossary

• VANOS — BMW's variable camshaft timing system. It adjusts the intake camshaft (single VANOS) or both camshafts (double VANOS) to improve torque and emissions.
• Valvetronic — BMW's variable valve lift system. It controls engine load with the intake valves instead of a throttle plate, improving economy.
• Direct injection — Fuel is injected directly into the cylinder instead of the intake port. It improves efficiency but can cause carbon build-up on the intake valves.
• Piezo injector — A fast-acting injector that uses a piezoelectric crystal. It allows precise fuel delivery but is sensitive to fuel quality.
• Wastegate — A valve that lets exhaust gas bypass the turbine to control boost pressure. Worn wastegates rattle and can cause boost faults.
• DPF — Diesel particulate filter. It traps soot and burns it off during regeneration, which needs longer journeys.
• EGR — Exhaust gas recirculation. It feeds some exhaust back into the intake to reduce NOx emissions but builds up soot.
• Common rail — A diesel injection system with a high-pressure fuel rail feeding all injectors. It allows precise, multiple injections per cycle.
• Long block — An engine with the block, head and internals but without most ancillaries such as manifolds, turbo, alternator or starter.
• Dressed engine — An engine with most ancillaries fitted, ready to install with fewer parts transferred.
• Compression test — A measurement of the pressure each cylinder builds when cranked. Even readings show healthy rings and valves.
• Leak-down test — A test that pressurises each cylinder and measures how much air escapes, showing where any leak is.
• LCI — Life Cycle Impulse, BMW's name for a mid-life update. Engines often change at the LCI.
• xDrive — BMW's all-wheel-drive system. xDrive cars often use a different sump and oil pickup.
• DME — Digital Motor Electronics, BMW's name for the engine control unit.
• CAS, FEM and BDC — The immobiliser and body modules that must be matched to the engine control unit on modern BMWs.
• Timing chain tensioner — A hydraulic or spring device that keeps the timing chain tight. Worn tensioners cause cold-start rattle.
• Rear-mounted timing chain — A timing chain at the gearbox end of the engine. Replacing it normally requires removing the engine.
• TU — Technical Update, BMW's suffix for a revised version of an engine.

Our verdict

The BMW G11 and G12 7 Series offers a wide choice of engines, and the right replacement depends on your exact model, build date and gearbox. Confirm the code with your VIN, choose a unit with known history, replace the known weak parts while it is out, and the car will be back on the road for years.

See every BMW G11 and G12 7 Series engine in stock, or ask the Hamburg desk to check your VIN.

Model-by-model engine guides

• BMW 750i (G11) engine: which one, problems and replacement
• BMW 730d (G11) engine: which one, problems and replacement
• BMW 740d (G11) engine: which one, problems and replacement