BMW N57 Diesel Injectors
Buy BMW N57 diesel injectors, OEM tested and calibrated to original specifications. All injectors include 12-month warranty and are in stock for fast UK delivery.
0 compatible injectors • OEM Tested • 12-Month Warranty
Remanufactured Injector stocks BMW N57 diesel injectors tested to OEM specifications. Each N57 injector includes new seals, nozzles, and 12-month warranty. UK-based specialists with same-day dispatch. Find your exact part below.
This page covers injector problems, symptoms, and verified solutions for N57 engines.
Used by UK garages daily
Every injector is tested before dispatch — if the fault persists, you're covered by our 12-month warranty.
For N57 engines, most issues are confirmed with testing before replacement.
What happens next
Take your time — we're here when you're ready.
The BMW N57 is a 3.0-litre inline-six turbodiesel that powered BMW's performance diesel range from 2008 to 2020. Renowned for its smooth power delivery and refinement, the N57 uses piezo injectors that demand precise calibration. Our remanufactured N57 injectors are flow-tested to match original specifications, restoring the silky performance these premium diesels are known for.
Vehicles Using the N57 Engine
BMW 325d / 330d / 335d
3 Series (E90/F30/G20)
2008-2019
BMW 525d / 530d / 535d
5 Series (F10/G30)
2010-2020
BMW 730d / 740d
7 Series (F01/G11)
2008-2020
BMW X5 xDrive30d / xDrive40d
X5 (E70/F15)
2010-2018
BMW X6 xDrive30d / xDrive40d
X6 (E71/F16)
2008-2019
Common N57 Injector Problems
Piezo stack drift causing injector quantity deviation over time
Nozzle tip erosion from high injection pressures (2000+ bar)
Solenoid coil burnout on earlier production units
Seal degradation causing combustion gas leaks at high mileage
Injector coding loss requiring re-calibration after ECU work
Available BMW N57 Injectors
No injectors currently listed for the N57 engine code.
Browse all BMW injectors →Why Remanufactured Injectors Are Recommended for N57
N57 injectors use piezo technology that requires BMW ISTA for proper coding. Each injector has a unique calibration code that must be transferred to the DME. Due to the 6-cylinder layout, we recommend checking adjacent injectors when one fails - heat damage often spreads. Always torque to 9Nm specification.
The BMW N57 engine requires injectors calibrated to specific flow rates and spray patterns. At Remanufactured Injector, our technicians test every N57 injector to original manufacturer specifications using OEM-grade diagnostic equipment.
BMW N57 Injector Cost
BMW N57 diesel injector replacement cost UK ranges from £150 to £400 per injector for remanufactured units. The N57 engine uses precision-calibrated injectors that require exact flow rates and spray patterns.
Testing N57 injectors costs £20 each and confirms which specific injector is causing problems. Common N57 symptoms like rough idle, black smoke, or poor fuel economy often stem from just one faulty injector.
Our remanufactured N57 injectors are tested to BMW original specifications with new seals, nozzles, and 12-month warranty included. Same performance as new, significantly lower cost.
When to Test vs When to Replace
Test Injectors When...
- • Engine warning light appeared but car still runs
- • Fuel economy has dropped noticeably
- • Rough idle or hesitation on acceleration
- • You want to confirm which injector is faulty before buying
- • Garage quotes full set replacement but you want a second opinion
Replace Injectors When...
- • Testing has confirmed injector failure
- • Visible damage, leaks, or Black Death carbon buildup
- • High mileage (150,000+ miles) and multiple symptoms
- • Previous repair attempt failed
- • Vehicle is undriveable or will not start
What Most Customers Choose
Testing first. At £20 per injector, testing identifies exactly which unit needs replacing — saving an average of £300-£600 by avoiding unnecessary full-set replacement. If testing confirms failure, we credit the test cost against your injector purchase.
Common Questions
Will this fix my problem?
If your issue is caused by a faulty injector, yes. Our injectors are tested to OEM specifications and will restore proper fuel delivery. If you're unsure, we recommend testing first — it's only £20 per injector and confirms exactly what's wrong.
What if testing shows they're OK?
That's good news — it means your injectors aren't the problem. You've spent £80 to potentially save £600+ on unnecessary parts. We'll help you identify other possible causes based on your symptoms.
How fast is delivery?
Next working day delivery on orders before 2pm (UK mainland). Most items ship same day from our UK warehouse. You'll receive tracking details by email once dispatched.
Same decision most professional mechanics make.
What You Get
No irreversible steps until results are confirmed.
BMW N57 Injector FAQs
Content reviewed for accuracy in 2026
Other BMW Engine Codes
Common Problems with BMW N57 Injectors
The BMW N57 engine commonly experiences injector issues related to timing chain stretch affecting injector seat alignment, piezo element degradation at high mileage, and carbon buildup from the EGR system. The N57 uses precision common rail technology operating at 1800-2500 bar – even minor contamination causes spray pattern issues. Professional testing identifies exactly which injector is failing before expensive replacements.
Symptoms of Failing BMW N57 Injectors
Failing BMW N57 injectors typically cause: rough idle or vibration at standstill, excessive white or black smoke on startup, poor acceleration and "limp mode" activation, increased fuel consumption (10-20% worse), engine warning light with P0201-P0204 fault codes, hard starting especially when cold, and diesel knock or rattling sounds. BMW N57 engines often show vibration at idle before other symptoms appear. If you notice any of these symptoms, professional injector testing (£20/injector) can confirm the diagnosis before committing to replacement.
Popular BMW Models
Browse Bmw diesel injectors by vehicle model.
Bmw 3 Series
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Bmw 320d
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Bmw 520d
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Bmw X3
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Related BMW N57 Resources
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This guide is updated regularly to reflect the latest injector data and testing standards.
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