Used Mercedes-Benz G-Class Fuel Injector

This is a critical boundary question: the G-Class ran in its W463 generation from 1989 right through to 2018, but a full model redesign produced the W464 from 2018 onwards, and even within the long W463 run there were significant engine changes over the years. Fuel injectors are matched to the engine code first and foremost, so a 2010 and a 2018 W463 may share an injector if they share the same engine code, but crossing into the W464 is a different matter entirely. Confirm the engine code from your V5 or a VIN check and give it to the breaker so they can verify compatibility against their donor vehicle.

Engine code matters above everything else for fuel injectors — the G-Class has been offered with a wide range of petrol and diesel engines across its long production history, including different four-cylinder, six-cylinder, and V8 units, and injectors are specific to the fuel delivery system of each engine. Two G-Class vehicles from the same year can have completely different injectors if they carry different engine codes. Find your engine code on your V5 registration document or via a VIN check, and supply it to the breaker alongside your registration.

No — diesel and petrol fuel injection systems are entirely different in design and operating pressure, so a diesel injector will not fit a petrol engine and vice versa. The G-Class has been sold in the UK with both diesel engines (such as the OM642 V6 diesel) and petrol engines (such as the M273 or M157 V8 units), so confirming your fuel type is essential before any search. Always supply your engine code to the breaker to ensure you are quoted the correct part.

Trim level or badge alone does not determine injector fitment; what matters is the actual engine code fitted to your vehicle. A G350d and a G500 carry completely different engines and will need different injectors, but two vehicles both badged G350d built around the same period are very likely to share the same injector design if they share the same engine code. Give the breaker your engine code rather than just the badge name, and they can confirm the correct part against their stock.

The W463 generation spans from 1989 to 2018, which is an unusually long production run, and the engines fitted changed substantially over that period even within the same body generation. Whether a 2005 and a 2015 W463 share injectors depends entirely on whether they carry the same engine code — if they do, there is a reasonable chance of compatibility, but mid-production engineering changes can affect ancillary details even on matching engine codes. Confirm the engine code from both vehicles with the breaker before agreeing a purchase.

This is an important question and one you must raise directly with the breaker and your fitting garage, as some modern diesel and petrol injection systems use injectors that carry calibration data which can interact with the engine management system. We cannot state as fact whether your specific engine requires coding after an injector swap — it depends on the engine variant and the vehicle's management system. Ask the breaker and a qualified Mercedes-Benz technician before fitting, as getting this wrong could cause running issues.