Mercedes-Benz G-Class Fuel Injection Pump Replacement Parts

The G-Class W463 generation ran from 1989 onwards, with a significant facelift and engine refresh around 2012 introducing revised powertrains, so a pump from before that boundary may not cross directly to a post-2012 vehicle even if the engine displacement looks the same on paper. The critical detail is your exact engine code, which you'll find on your V5 or via a VIN check, because the injection pump follows the engine code above all else. Confirm with the breaker whether a specific pump crosses that 2012 boundary against your registration before buying.

Yes, these use fundamentally different engines – the G350d runs a diesel engine while the G500 is petrol – so their injection pumps are entirely different and not interchangeable. Always match the pump to your engine code rather than the badge or the model name, as the fuel type governs the pump design. Supply your engine code to the breaker and they will confirm the correct unit for your vehicle.

Trim level does not affect fuel injection pump fitment; what matters is the engine code, fuel type, and gearbox type, not whether your G-Class carries an AMG Line badge or a full AMG designation. If two G-Class vehicles share the same engine code they will use the same pump regardless of trim. Bear in mind that cosmetic and interior differences will exist between trim grades when sourcing any surrounding parts, but for the pump itself, trim is irrelevant – just lead with your engine code.

This is a genuine concern with modern diesel and petrol injection pumps, as some units may be electronically paired to the donor vehicle's ECU or immobiliser system. We can't state as fact whether your specific pump will need coding or whether it will operate without further work, as this varies by engine generation and the individual unit. Confirm with the breaker whether the pump from the donor vehicle's registration will require coding to yours before committing to the purchase.

Gearbox type is a relevant fitment consideration for the injection pump, as the fuelling and pump calibration can differ between automatic and manual transmission applications on some engines. Always tell the breaker both your engine code and your gearbox type so they can match the correct pump to your vehicle. Never assume a pump from an automatic donor will drop straight into a manual car without checking first.

Mounting brackets, ancillary connections, and pipework positions can change mid-production on the same engine family, meaning a pump from an early build may look similar but have subtle differences to a later one. Because we can't state as fact exactly when these changes occurred, the safest approach is to give the breaker your full registration or VIN so they can cross-reference the donor vehicle's details against yours. This is especially important if you're sourcing a pump from a vehicle near the edges of a production change, such as around the 2012 model update.