Used Mercedes-Benz GLC EGR Valve

Yes, but only on diesel variants — the EGR (Exhaust Gas Recirculation) valve is fitted to diesel-engined GLC models such as those running the OM651 and OM654 four-cylinder diesel engines, and is part of their emissions management system. Petrol-engined GLC variants do not use an EGR valve in the same way, so if you have a petrol GLC you are unlikely to need this part. Check your V5C or registration plate lookup to confirm whether your GLC is diesel before searching for this part.

This spans an important boundary — the GLC (X253) ran from 2015 to 2022, with a significant facelift in 2019 that brought engine updates including the move from the older OM651 to the refined OM654 diesel unit, which also shifted emissions compliance from Euro 6b toward Euro 6d-Temp and Euro 6d standards. Because the engine family changed across that facelift, an EGR valve from a pre-2019 diesel GLC is unlikely to be a straight swap onto a post-2019 car. Confirm the exact engine code on both vehicles with the breaker before proceeding.

No — trim level does not affect EGR valve fitment on the GLC; Sport, AMG Line, and other trim grades share the same engine and emissions hardware when they use the same engine code. The part you need is determined entirely by engine code, fuel type, and emissions standard, not by what badges or interior specification the car has. Just confirm your engine code (found on your V5C or stamped on the engine) and let the breaker match from there.

The most important detail to have ready is your engine code, which for diesel GLCs is typically OM651 (fitted to earlier X253 models from 2015) or OM654 (introduced around the 2019 facelift), though you should verify this against your own V5C or by checking with the breaker using your registration. The emissions standard — Euro 6 variant — matters too, as EGR systems were updated alongside those regulatory changes. Quoting your registration to the breaker is the quickest way to ensure they pull the right part.

It is plausible that Mercedes models sharing the same engine code and emissions generation use compatible EGR valves, since the part follows the engine rather than the body it is fitted to. However, ancillary differences such as bracket positions or sensor connectors can vary between model applications even with the same base engine, so this is firmly confirm-with-the-breaker territory. Give the breaker the engine codes of both donor and recipient vehicles and let them advise before you buy.

EGR valves are calibrated to work within a specific emissions control strategy — swapping in a unit from an earlier Euro 6 sub-standard (for example, Euro 6b versus Euro 6d) could result in fault codes, poor running, or a failed MOT emissions test even if the valve bolts on. The GLC's engine management system expects the EGR to behave within tight parameters defined for its specific emissions tune, so a visually identical valve from a different era may not be recognised correctly. Always tell the breaker your exact emissions standard, not just 'Euro 6', to get the right match.