M-TRI UPGRADE
BMW OEM Fuel Injector - N20 / N54 / N55 / N63 / B38 / B48 (Per Unit)
BMW OEM Fuel Injector - N20 / N54 / N55 / N63 / B38 / B48 (Per Unit)
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Quick Answer
BMW OEM fuel injector replacement for N20, N54, N55, N63, and B58 engines. Direct-fit replacement using factory-spec injector flow rates and connector type. No coding required — the DME self-adapts to new injectors within one drive cycle. Resolves rough idle at cold start, cylinder misfires, and injector fault codes. Ships worldwide from MTri Upgrade.
BMW OEM Fuel Injector for N20, N54, N55, N63, B38, B48, B58, S55, S58 engines. Genuine BMW replacement. Fixes rough idle, misfires, fuel smell. M-TRI UPGRADE, worldwide shipping.
Does any of this sound familiar?
- Your BMW shakes at idle, especially when cold, and the feeling never fully goes away?
- ISPA or ISTA pulled fault codes 2EFE, 29F1, or 30E0 and your dealer quoted you twice the part cost just to look at it?
- You are getting rough, lumpy power delivery under load — not a tune problem, not a spark plug problem, the injectors are just worn?
- Cold starts feel like the engine is running on five cylinders, and it takes a full minute to smooth out?
- You replaced the coils and plugs already and the misfire came back — because nobody told you injector leak-down is the actual culprit on high-mileage N55s and B48s?
- The dealer wants over $350 per injector for the exact same Bosch or Continental unit you can fit yourself in an afternoon?
BMW Original Equipment Fuel Injector — N20 / N54 / N55 / N63 / B38 / B48
Genuine BMW-spec fuel injectors, supplied per unit. Direct OE replacement — no remapping, no recoding. Solves rough idle, misfire codes (2EFE / 29F1 / 30E0), poor cold start, and uneven cylinder balance.
Why Genuine
- OE part code — same supplier as the dealer (Bosch / Continental).
- Drop-in — no programming or remap needed for replacement.
- Pressure-tested & flow-matched — leakage and spray pattern verified.
- Solves common faults — misfire under load, hard start, hesitation, fuel-trim faults.
Variant Options (per injector)
- N20 — turbo I4 (228i, 320i, 328i, 428i, 528i, X1 28i, X3 28i). 4 injectors per engine.
- N54 — twin-turbo I6 (335i, 535i, 740i, X6 35i, 1M, Z4 35is). 6 injectors.
- N55 — turbo I6 (135i, 335i, 535i, 640i, 740i, X3 35i, X5 35i). 6 injectors.
- N63 — twin-turbo V8 (550i, 650i, 750i, 760i, X5 50i, X6 50i). 8 injectors.
- B38 / B48 — turbo I3 / I4 (F-chassis 18i/20i/30i, G-chassis 20i/30i). 3-4 injectors.
Specs
- Brand: Bosch / Continental (BMW OE supplier)
- Origin: Germany / EU
- Sold per unit (not as a set)
Send your VIN to confirm exact part number and quantity required.
Frequently Asked Questions
How do I know if I need a new injector vs other fuel issues?
Common symptoms of a failed injector: misfire codes (P0301-P0306), rough idle especially on cold start, fuel smell from oil dipstick, sudden drop in MPG. A scan tool showing per-cylinder misfires is the clearest indicator. We recommend BMW dealer or independent diagnostic before replacing.
Are these genuine BMW injectors or aftermarket?
Genuine OEM Bosch injectors as supplied to BMW — same part numbers as factory replacement. Not aftermarket clones.
Do I need to code the new injector to my ECU?
Yes — direct injectors require flow rate calibration coding to the DME after replacement. We recommend BimmerCode or BMW dealer diagnostic. We can include remote coding service for an additional fee at checkout.
How many injectors should I replace at once?
Generally only the failed cylinder, but on high-mileage engines (>150,000 km) some shops recommend doing all 4 or 6 to avoid repeat labor. Your call based on age and driving habits.
What's the warranty on these injectors?
12-month warranty against manufacturing defect. Doesn't cover damage from contaminated fuel or unrelated engine issues.
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Frequently Asked Questions
How does remote coding work?
After purchase we schedule a remote session. Connect an ENET cable to your BMW's OBD2 port, open TeamViewer, and we handle the rest — coding is complete in 15–60 minutes.
Is the coding reversible?
Yes — 100% reversible. We back up your original settings before any changes. You can restore to factory at any time.
Which BMW models are supported?
Most services support F-Series and G-Series BMWs. Exact compatibility is listed in each product. Contact us if unsure about your model.
What do I need?
You need: (1) an ENET OBD2-to-Ethernet cable, (2) a Windows laptop, (3) TeamViewer (free). We supply all coding software and guide you step-by-step.
How long does a session take?
Single features take 15–30 minutes. Full packages take up to 2 hours. Sessions run 7 days a week across NZ, AU, USA and Middle East time zones.