Mercedes-Benz C Class (w204) Diesel Injectors

Showing common injectors used in Mercedes-Benz engines. Search by part number for an exact match.

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The Mercedes-Benz C-Class is one of the UK's busiest diesel-injector replacement jobs. From the W203 with its early OM611/OM646 four-pots, through the W204 OM651 — the engine that introduced the "black death" injector-seat leak that became the byword for diesel Mercedes — to the W205 / W206 OM654 with its NoX-trap-friendly piezo control, every C-Class generation eventually reaches us. We hold remanufactured injectors for all four engine families in our UK warehouse. Each unit is stripped fully, fitted with new internal seals, nozzle and valve, then recalibrated against a Bosch EPS 815 master rig. A new copper sealing washer ships with every injector, and the IMA classification code is supplied on the test certificate so the fitter can re-code the ECU in the same workshop visit. Order before 2 pm and the parts go out the same day, backed by our 12-month parts warranty.

Common injector faults on the Mercedes-Benz C-Class

"Black death" — tar build-up around the injector seat from a leaking copper washer (OM651, very common past 80k)
Cracked injector tips on OM611 / OM646 from high-mileage carbon polishing
OM654 piezo stack drift causing intermittent cold-start misfires
Hard-baked seized injector bodies on neglected OM651s (requires slide-hammer extraction)

Popular engine codes

OM651 OM654 OM611 OM646

Why choose remanufactured?

A genuine Mercedes OE injector lists at £450-£600 each, and dealers commonly insist on replacing all four. A remanufactured set covers the same job for a quarter of the cost, ships with a documented Bosch master-rig test sheet, and carries our 12-month warranty. We supply new copper washers in the box so you never need to reach for the old ones.

Rough idle guide Excess smoke Poor fuel economy How remanufacturing works 12-month warranty

Confirm your engine or part number

We have not yet confirmed a specific injector for the Mercedes-Benz C Class (w204). Check the engine code on your V5C or the OE number on the failed injector and search for an exact match — or contact us for a free fitment check.

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Other injectors for Mercedes-Benz vehicles — compatibility not confirmed

Popular Mercedes-Benz injectors from our catalogue. These have not been confirmed for the Mercedes-Benz C Class (w204) — match the engine code or OE part number before ordering.