Second Hand Peugeot 308 EGR Valve

Yes, but only on certain engine variants. EGR (Exhaust Gas Recirculation) valves are fitted to diesel engines across the 308 range, and also to some petrol turbocharged engines; naturally aspirated petrol engines may not carry one. If you're unsure whether your specific engine has an EGR valve, check your engine code against your V5C or ask the breaker to confirm against your registration.

Almost certainly not as a direct swap — the Mk1 and Mk2 308 are substantially different generations with different engine families, so the EGR valve design, connector, and mounting are unlikely to match. Even where the engine code looks similar across the generation boundary, confirm fitment with the breaker against your exact registration before purchasing. Do not assume a Mk1 part will fit a Mk2 or vice versa.

Yes, this matters significantly. The EGR system is closely tied to the emissions standard your engine was built to meet, and a valve from the wrong emissions era may not function correctly or could cause issues at MOT. Euro 6 engines (broadly from around 2015 onwards in the 308 Mk2) typically have revised EGR configurations compared to Euro 5 units, so always confirm the emissions standard and engine code with the breaker against your registration.

No — trim level has no bearing on EGR valve fitment. The part is determined entirely by your engine code and fuel type, not by whether your car is an Active, Allure, GT Line, or GT. You may find the engine bays look cosmetically different between trims, but the EGR valve itself is the same across trims sharing the same engine. Just supply the breaker with your engine code and registration to identify the correct part.

No — the 1.6 HDi and 2.0 HDi are different engines with different EGR valve designs, sizes, and fittings, so these are not interchangeable. Always match the EGR valve to the exact engine code rather than assuming diesel-to-diesel compatibility. Give the breaker your full engine code (found on your V5C or stamped on the engine block) and registration to ensure a correct match.

It is possible that PSA group vehicles sharing an identical engine code use the same EGR valve, as these platforms and engines were shared across brands including Peugeot, Citroën, and DS. However, minor differences in pipe routing, connectors, or bracket mounts can vary between models even with the same engine, so this is not guaranteed. Route this question to the breaker, giving them both the donor vehicle's registration and your own, so they can verify the part numbers match before you commit.