Cheap Mercedes-Benz SLK EGR Valve

It depends entirely on the engine. The SLK range included both petrol and diesel variants across its three generations (R170 1996–2004, R171 2004–2011, R172 2011–2020), and EGR valves are fitted to diesel engines as standard — the diesel SLK 200 CDI and 250 CDI variants in the R172 generation would carry one. Petrol-engined SLKs, which make up the large majority of UK cars, do not have an EGR valve at all, so if your SLK is a petrol model you will not find this part on it. Check your V5 or registration plate details to confirm whether your SLK is diesel before searching further.

These are distinct generations — the R171 ran from 2004 to 2011 and the R172 from 2011 onward — and the engine families, emissions calibration, and EGR system designs differ significantly across that boundary. Even if a valve looks physically similar, the emissions era difference (the R172 diesel variants were engineered to Euro 5 and later Euro 6 standards) means a direct swap is very unlikely to be straightforward. Confirm the exact engine code on your own car against the engine code on the donor vehicle with the breaker before purchasing.

No — trim level has no bearing on EGR valve fitment for the SLK. Whether your car is a standard SLK, an AMG Line, or any other trim designation, what matters is the engine code and the emissions standard the engine was built to. Ask the breaker to match the part to your engine code rather than your trim level.

Both years fall within the R172 generation, but you need to check the specific engine codes against each other, as running changes and Euro 6 compliance updates within a generation can alter EGR system specifications. Give the breaker both registration numbers so they can verify the engine codes match before you commit to buying.

Mercedes-Benz does share engine families across models — for example, the OM651 diesel engine found in some SLK diesels also appeared in the C-Class and E-Class — so cross-model fitment is genuinely possible in some cases. However, ancillary routing, bracket positions, and emissions-era calibration can differ even on nominally the same engine, so this is firmly confirm-with-the-breaker territory. Provide your full engine code (found on your V5 or stamped on the engine block) to the breaker and ask them to verify it matches the donor vehicle's code exactly.

You will need your registration number, the full engine code (a letter-and-number sequence stamped on the engine block or listed on your V5C), and confirmation that your SLK is a diesel variant. The generation — R170, R171, or R172 — is also useful context, but the engine code is the most critical piece of information for a breaker to confirm compatibility. Having these details ready will save time and reduce the risk of ordering the wrong part.