How much does M57 injector replacement cost?

A full set of six remanufactured M57 injectors costs £600-£1,000. Labour is 4-5 hours for the full set.

Do M57 injectors need coding?

Early M57 (pre-2003) injectors are plug-and-play. M57TU2 variants may require coding via BMW ISTA.

Is the M57 used in Range Rover?

Yes. The L322 Range Rover TD6 uses the BMW M57 engine and identical Bosch injectors.

How much does it cost to replace injectors?

Replacement typically costs £150–£350 per injector depending on brand and engine. A full set of four with professional fitting usually costs £600–£1,200.

Can I drive with a faulty injector?

Driving with a faulty injector can cause engine damage, increased fuel consumption, DPF contamination, and oil dilution. We recommend diagnosis and replacement as soon as possible.

Do new injectors need coding?

Some vehicles require injector coding after replacement using manufacturer-specific diagnostic tools. Many Bosch solenoid units are plug and play. Check your engine guide for specific requirements.

Why is my diesel injector knocking?

Diesel injector knocking is typically caused by worn nozzle tips that alter the fuel spray pattern, leading to harsher combustion. Carbon buildup, incorrect injection timing, and high fuel pressure can also contribute. A professional leak-off test can confirm whether injectors are the cause.

Can a bad injector cause white smoke?

Yes. A faulty injector that dribbles fuel instead of atomising it causes incomplete combustion, producing white or grey smoke. This is especially noticeable on cold starts and typically clears as the engine warms up.

How long do diesel injectors last?

Most diesel injectors last between 80,000 and 150,000 miles depending on fuel quality, driving conditions, and maintenance. Regular fuel filter changes and using quality diesel can extend their lifespan.

Will injector cleaner fix misfire?

Injector cleaner may help with minor carbon deposits, but it cannot fix worn nozzles, failed solenoids, or internal seal leaks. If misfire persists after using cleaner, professional testing and likely replacement is needed.

BMW M57 3.0d Injector Problems: Symptoms & Repair Guide (UK)

Updated for 2026 diagnostics & repair guidance

Predecessor to the N57. Six solenoid injectors — higher replacement cost but exceptional engine.

The M57 is BMW's legendary straight-six diesel, famed for its smooth power delivery and reliability. Found in the E46 330d, E39 530d, and E53 X5, it uses Bosch solenoid injectors. High-mileage examples are now common in the UK and injector replacement is frequent.

OEM tested & calibrated12-month warrantyFree UK deliveryNo coding required (most models)

OEM Tested
12-Month Warranty
Free UK Delivery

Registration Lookup Find Matching M57 Injector

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Quick Diagnosis

If your M57 engine shows:

rough idle
hard starting
white or black smoke
knocking or ticking noise
reduced fuel economy

A faulty injector may be the cause. Continue below to confirm symptoms and solutions.

Can You Drive With This Problem?

Driving short distances may be possible, but continued use can cause:

piston damage
turbo contamination
fuel dilution of engine oil
catalytic converter damage

Prolonged driving may lead to major engine failure.

Typical Repair Costs (UK)

Average costs for injector-related repairs:

£180 - £350

Per Injector

£700 - £1,200

Full Set (4)

£120 - £300

Labour

Early replacement prevents costly engine damage.

Common Injector Failure Symptoms

Owners frequently report:

Rough running on one bank

The inline-6 can develop rough running isolated to one end of the engine.

Exhaust smoke on cold start

Worn injectors allow fuel to seep into cylinders overnight, causing startup smoke.

Loss of the characteristic smoothness

The M57 is normally silk-smooth — any roughness indicates injector deterioration.

Increased fuel consumption

Six worn injectors together can increase fuel consumption by 15-25%.

Full symptom guide White smoke guide

Fault Codes Linked to Injector Issues

Common diagnostic codes include:

P0201-P0206Injector circuit malfunction (cylinders 1-6)

P0087Fuel rail pressure too low

30BABMW: Cylinder injection cutoff

Misfire diagnosis guide

How to Diagnose M57 Injector Faults

Follow this step-by-step testing approach to identify the faulty injector:

1
Read fault codes
Connect an OBD-II scanner and note any injector-related codes (P0201–P0204, P2146, P2149). This identifies which cylinder is affected.
2
Perform a leak-off test
Disconnect the fuel return pipes and route into measuring containers. Run the engine at idle for 60 seconds. Compare volumes per cylinder against manufacturer spec.
3
Listen for injector tick
Use a mechanic's stethoscope on each injector body. A dead or irregular tick indicates a stuck or failing solenoid.
4
Check fuel rail pressure
Monitor live fuel rail pressure data via diagnostic tool. Low pressure can mimic injector symptoms and may indicate a fuel pump issue instead.
5
Inspect for external leaks
Check around injector seals for signs of fuel or combustion gas leakage. Black carbon deposits indicate a blown seal.
6
Cylinder balance test
Use diagnostic software to run a cylinder contribution test. This electronically disables each injector in turn to measure its effect on engine speed.

Full leak-off test guide Injector coding guide

Why M57 Injectors Fail

Common causes include:

fuel contamination
high-pressure wear cycles
carbon buildup
poor fuel quality
internal valve wear

Professional remanufacturing restores spray pattern and pressure accuracy.

When Replacement Is Required

Injector replacement is recommended if:

leak-off test fails
misfire persists after coding
excessive return flow detected
spray pattern fails testing
vehicle enters limp mode

M57 Repair Advice

The M57 uses six injectors, making a full set replacement expensive but worthwhile. Earlier M57 variants do not require coding. M57TU2 (2003+) may require basic coding via ISTA.

Remanufactured (Recommended)

OEM-spec rebuild with new nozzles, seals, and solenoids. Full flow testing. 12-month warranty. 40–60% less than new.

Brand New OEM

Factory-fresh from Bosch, Delphi, or Siemens. Highest cost but zero previous wear. Best for low-mileage vehicles.

Vehicles Using the M57 Engine

This engine is commonly found in:

BMW 330d

E46 · 1999-2005

BMW 530d

E39/E60 · 1998-2010

BMW X5 3.0d

E53 · 2000-2006

BMW 730d

E65 · 2002-2008

Land Rover Range Rover TD6

L322 · 2002-2006

Professional Installation Tip

Always:

replace copper sealing washers
torque injectors to manufacturer specification
clean injector seats before installation
code injectors after installation (if required)

Leak-off test guide Injector coding guide

Compatible Injector Part Numbers for M57

The following injector part numbers are commonly associated with M57 engines:

Bosch

0445110047

Bosch injector for early M57

View details

Bosch

0445110266

Bosch injector for M57TU2

View details

BMW

13537785574

BMW OE reference

View details

M57 Injectors — Shop Now

In-stock injectors listed first for fastest delivery:

BMW 3 SERIES ( 330d M Sport E93) 3L 2007-2009 Diesel Injector

£237.90

In StockNext-day delivery12 months

BMW 3 SERIES ( 330d M Sport E92) 3L 2007-2009 Diesel Injector

£237.90

In StockNext-day delivery12 months

BMW 3 SERIES ( 330d E90) 3L 2007-2007 Diesel Injector

£237.90

In StockNext-day delivery12 months

BMW 3 SERIES ( 330d M Sport Auto E9X) 3L 2005-2009 Diesel Injector

£130.00

Made to order12 months

BMW 3 SERIES ( 330d M Sport E9X) 3L 2005-2015 Diesel Injector

£130.00

Made to order12 months

BMW 3 SERIES ( 330D E46) 2.9L Diesel Injector

£150.00

Made to order12 months

BMW 3 SERIES ( 330D AUTO E46) 2.9L Diesel Injector

£150.00

Made to order12 months

BMW 3 SERIES ( 330d E90) 3L 2006-2009 Diesel Injector

£200.00

Made to order12 months

View all M57 injectors

These injectors are commonly used with the M57 engine. Confirm compatibility using your engine code or registration lookup before ordering. Our team can verify the correct part for your specific vehicle.