Second Hand Mercedes-Benz C-Class Fuel Injection Pump

Both years fall within the W203 generation (2000–2007, facelift 2004), but the facelift in 2004 can bring ancillary and mounting changes that affect whether a specific pump will bolt straight in, so you cannot assume parts cross that boundary freely. The most important thing to confirm is that the engine codes match exactly — the pump follows the engine, not the year or the badge. Supply your engine code (found on your V5 or via a VIN check) when you request quotes, and ask the breaker to confirm compatibility against your registration before you buy.

Yes — for mechanical parts like a fuel injection pump, the engine code is the single most useful detail you can supply, sitting above year, body style, or trim level. Two C-Classes from the same year can carry different engines with pumps that are not interchangeable, while two cars from different years sharing the same engine code are far more likely to be compatible. Your engine code is on your V5 logbook or available through a VIN check, and every breaker quoting on Findapart will want it.

No — trim levels like SE, Avantgarde, Sport, and AMG Line are cosmetic and equipment grades; they do not change the fuel injection pump required. What matters is the engine code, fuel type (diesel or petrol), and gearbox type, all of which can vary independently of trim. You may find minor cosmetic differences on a salvage car from a different trim, but the pump itself will be the same if the engine code matches.

The W204 generation ran from 2007 to 2014, with a facelift in 2011, so your car sits on one side of a known production boundary. Engine codes can carry across that boundary, which is encouraging, but ancillary fittings and mounting points can change mid-production in ways that are not always well-documented. Name the boundary to the breaker, give them your full engine code and registration, and ask them to confirm the specific pump they have is a match before committing.

It is quite common for Mercedes-Benz to share engine families and associated components across model lines, and if the engine code is genuinely identical the pump may well be the same unit. However, ECU pairing and immobiliser coding are separate concerns that can complicate fitting a pump from a different vehicle, and these are things you must confirm with the breaker against your specific registration rather than assume. Always cross-reference the full engine code and ask the breaker explicitly whether the part they are supplying has any coding considerations.

No — body style does not affect which fuel injection pump your car needs; the pump is determined by the engine code, fuel type, and gearbox type. A matching pump from a C-Class saloon will be the same unit as one from an estate if the engine codes are identical. Focus on getting the engine code right and let the breaker confirm compatibility against your registration.