Mercedes-Benz G-Class EGR Valve Replacement Parts

Yes, but only on diesel-engined G-Class models — the EGR (exhaust gas recirculation) valve is fitted to diesel variants such as those running the OM642 V6 diesel engine, which covers a wide range of G-Class models from the mid-2000s onwards. Petrol G-Class variants (including AMG V8 and V12 petrol models) do not use EGR valves in the same way and are unlikely to be what you need. Check your V5C or registration plate lookup to confirm whether your G-Class is diesel before ordering.

The G-Class has been built on the W463 platform since 1989, with a significant update arriving in 2018 (often called the W463A or second-generation W463), which introduced new engines including the OM656 inline-six diesel replacing earlier V6 units. An EGR valve from a pre-2018 OM642-engined model is very unlikely to cross over to a post-2018 car with a different engine family, so you should confirm with the breaker against your exact registration and engine code before buying. Engine code is the key detail here, not the W463 platform designation alone.

Trim level and badge (G350d, G400d, AMG G63, and so on) do not in themselves determine EGR valve fitment — what matters is the engine code fitted to your vehicle. The G63 AMG and other petrol AMG variants are petrol-engined and will not use the same EGR setup as a diesel G350d or G400d, but that difference comes down to fuel type and engine, not the trim name. Confirm your engine code with the breaker and disregard trim or badge when searching.

Yes, emissions era can affect EGR valve design because manufacturers sometimes revised EGR systems to meet tighter standards, and a valve calibrated or shaped for a Euro 6 engine may not be a straight swap onto an earlier Euro 5 unit even if the engine family looks similar. The Mercedes-Benz G-Class diesel crossed into Euro 6 compliance around 2014–2016 depending on market and exact engine variant, so if your car and the donor car sit either side of that boundary you should confirm compatibility with the breaker using both registration numbers. Fitting a valve from the wrong emissions era could also cause issues at MOT.

In principle, EGR valves are engine-specific rather than model-specific, so if the donor vehicle genuinely carries the same OM642 engine code and is from the same emissions era as your G-Class, there may be compatibility — however, mounting configurations and ancillary pipe routing can differ between vehicle applications even with a shared engine. This is firmly a case where you should confirm the full part number and engine code with the breaker before purchasing, as small application-specific differences can mean the part does not physically fit. Never assume cross-model fitment without checking.

Give the breaker your vehicle registration number, your engine code (found on the V5C or a sticker in the engine bay), the fuel type, and ideally the current mileage and any fault codes you have if the EGR has triggered a warning light. The engine code is the single most important detail because EGR valves are matched to specific engine variants and emissions calibrations rather than to the model name or year alone. Having this information ready will help the breaker locate a compatible part quickly and reduce the risk of ordering something that looks right but does not fit.