BMW Garage
BMW N54 Fuel Pump & Injector Repair
Specialist high-pressure fuel pump (HPFP) and injector replacement for BMW N54 twin-turbo engines. Full system adaptation, coding, and leak-testing at our Billericay workshop.
15+ yrs
BMW specialists
1,800+
engines rebuilt
12 mo
unlimited-mileage warranty
What This Service Involves
The BMW N54 engine — a twin-turbo straight-six — is known for high-pressure fuel pump (HPFP) and fuel injector wear. Our workshop carries out the full replacement process with factory-level precision, including coding and adaptation to ensure correct fuel delivery.
- HPFP replacement — we access and remove the high-pressure fuel pump, install the new unit, and prime the fuel system.
- Fuel injector replacement — injectors are accessed, seals are removed and replaced using specialist tools, and new injectors are fitted.
- Fuel system bleeding & leak testing — the entire system is bled and pressure-tested to confirm there are no leaks.
- Injector coding & adaptation — each new injector is coded to the engine control unit using BMW-specific diagnostic equipment, ensuring precise fuel metering.
- Full road-test validation — every repair is driven and monitored to verify fuel pressure and performance under load.
We use genuine BMW parts or OEM-equivalent components, and every repair is backed by our 12-month unlimited-mileage warranty.
Starting Price
N54 HPFP & Injector Repair from £1,850
Includes parts, labour, coding, system bleeding, and final road-test. Full pricing details →
12-month unlimited-mileage warranty | 3–5 day typical turnaround
Inside our workshop
BMW N54 Fuel Pump & Injector Repair
N54 Fuel System Repair in Our Workshop
Images show staged work at our Billericay workshop. Real completed-job photography coming soon.
N54-Equipped BMW Models
The BMW N54 twin-turbo straight-six was used across a wide range of models. We carry out HPFP and injector repairs on all of them.
[3 Series](/bmw-3-series-engines)
[5 Series](/bmw-5-series-engines)
- 535i (E60/E61)
[Z4](/bmw-z4-engines)
- sDrive35i (E89)
- sDrive35is (E89)
[X6](/bmw-x6-engines)
- xDrive35i (E71)
[7 Series](/bmw-7-series-engines)
- 740i (E65/E66)
Our N54 Fuel System Repair Process
- 01
Inspection & Diagnosis
We verify the fault using BMW diagnostic equipment, confirming HPFP pressure and injector performance.
- 02
Component Access
We carefully remove the engine cover, intake components, and fuel lines to access the HPFP and injectors.
- 03
HPFP & Injector Removal
Using specialist tools, we remove the high-pressure fuel pump and each fuel injector, replacing all seals.
- 04
Installation & Coding
New components are fitted, and each injector is coded to the engine control unit for correct fuel delivery.
- 05
System Bleed & Test
We bleed the fuel system, check for leaks, and verify fuel pressure meets BMW specifications.
- 06
Road Test & Handover
Every repair is road-tested to confirm performance, and we walk you through the work completed.
Why Choose BMW Garage for N54 Fuel System Repair
- Specialist N54 knowledge — we've completed hundreds of HPFP and injector replacements on twin-turbo BMWs.
- Factory-level equipment — BMW-specific diagnostic tools for injector coding and adaptation.
- 12-month unlimited-mileage warranty — on every repair, parts and labour included.
- Transparent pricing — fixed-price quotes with no hidden costs. See our pricing policy →
- Workshop in Billericay, Essex — purpose-built facility with dedicated engine bay and fuel-system workstations.
How It Works
- 01
Contact us
Call 0203 488 4649, WhatsApp, or use our online quote form.
- 02
Diagnostic check
We inspect your N54's fuel system and confirm the scope of work needed.
- 03
Repair & coding
We carry out the HPFP/injector replacement, including full coding and adaptation.
- 04
Test & collect
We road-test your BMW, and you collect it with a 12-month warranty.
Frequently Asked Questions
What are the symptoms of a failing N54 HPFP?+
Common signs include long cranking times before starting, loss of power under acceleration, engine stalling, and a check-engine light with fuel-pressure-related fault codes. If you're experiencing any of these, we recommend an inspection.
Why do N54 injectors need coding after replacement?+
BMW injectors are matched to the engine control unit through a coding process that ensures precise fuel delivery. Without coding, the engine may run unevenly, misfire, or produce incorrect fuel mixtures.
How long does the repair take?+
Typical turnaround is 3–5 days, depending on parts availability and the extent of the work required. We'll give you a clear timeline when we quote your job.
Do you use genuine BMW parts?+
Yes. We use genuine BMW parts or OEM-equivalent components from trusted suppliers. Every part is covered by our 12-month unlimited-mileage warranty.
Can you recover my BMW if it's not driveable?+
Yes, we offer nationwide engine recovery from £70. Contact us for a recovery quote if your BMW is stranded.
What's covered by the warranty?+
Our 12-month unlimited-mileage warranty covers parts and labour for the HPFP and injector repair we carry out. Full terms are available on our warranty page.