Cheap Peugeot 508 Fuel Injector

Fuel injectors exist on all Peugeot 508 engine variants — both petrol and diesel engines use them, though the injector type differs significantly between the two. Petrol engines use port or direct fuel injectors, while diesel engines (such as the HDi and BlueHDi units) use high-pressure common-rail injectors, which are entirely different parts that will not interchange. Make sure you know your fuel type before searching, as ordering the wrong type is a straightforward and costly mistake.

The Peugeot 508 first generation ran from 2011 to 2018, with a facelift arriving around 2014, so a 2012 and a 2016 are both first-generation cars but sit either side of that facelift boundary. Engine codes and injector specifications can change at a facelift even on engines that kept the same displacement, so the generation alone does not guarantee a match. Supply your engine code — found on your V5C or a VIN check — to the breaker, and ask them to confirm compatibility against it rather than relying on year alone.

The second-generation Peugeot 508 launched in 2018 and brought new engine families including updated PureTech petrol and BlueHDi diesel units, which are not the same engines carried over from the first generation (2011–2018). Because injectors are matched to the engine code rather than the model name or body, a first-gen and second-gen injector are very unlikely to be interchangeable. Always give the breaker your exact engine code so they can source from a matching donor vehicle.

Trim level has no bearing on fuel injector fitment on the Peugeot 508 — Active, Allure, GT Line, and other trims are defined by interior and cosmetic features, not by engine specification differences that would change the injector. What matters is the engine code, which can be identical across multiple trim levels fitted with the same unit. Focus on matching engine code and fuel type, and the trim badge on the donor car is irrelevant.

Yes, it matters enormously — diesel common-rail injectors and petrol injectors are completely different components that operate at different pressures and are physically incompatible. A diesel injector from a matching year will not fit a petrol 508, and vice versa, regardless of how closely the model years align. Always confirm your fuel type alongside your engine code when contacting a breaker.

Fuel injectors, particularly diesel common-rail units, can have calibration codes that need to be programmed into the ECU after fitting, and this is something you should confirm with your fitting garage before purchasing. Whether a specific used injector requires coding to your vehicle is something to confirm with the breaker and your mechanic against your exact registration and engine code, as requirements can vary between engine variants and model years. This is not something that can be guaranteed in advance, so factor potential coding costs into your budget.