Second Hand Peugeot 308 Fuel Injector

Yes, the 308 has fuel injectors on both its petrol and diesel engines across all generations, though the type differs: petrol engines use port or direct fuel injectors depending on the variant, while diesel engines use high-pressure common-rail injectors. Every 308 sold in the UK will have injectors of one kind or another, so you are looking for the right type for your specific engine rather than wondering whether the part exists at all. The critical thing is identifying your exact engine code, as injector specifications vary significantly even within petrol-only or diesel-only families.

The 308 Mk1 ran from 2007 to 2013, and the Mk2 launched in 2013 and received a facelift around 2017, so a 2012 car is Mk1 and a 2016 car is Mk2 — these are entirely different platforms with different engines, meaning the injectors are not interchangeable between those two years. Even within the same generation, injector compatibility is driven by the engine code rather than the model year, so you need to match on that rather than the year alone. Confirm your engine code from your V5 or a VIN check and supply it to the breaker so they can match the correct injector.

Trim level does not affect fuel injector fitment on the 308 — Active, Allure, GT Line, and GT are all badge and equipment differences rather than mechanical ones, and cars sharing the same engine code will use the same injector regardless of trim. What matters entirely is the engine code, fuel type (petrol or diesel), and in some cases the production date if the engine family was revised mid-run. Tell your breaker your engine code and registration and ignore the trim name when searching.

The 308 Mk2 was facelifted around 2017 and brought some engine and calibration updates alongside the visual changes, so whether a pre-facelift injector crosses over to a facelift car is not something that can be stated with certainty here. The safest approach is to treat the facelift as a potential boundary and confirm directly with the breaker by supplying your exact engine code and registration, as they can check against what they have stripped. Do not assume compatibility simply because both cars are Mk2 308s.

No — diesel and petrol injectors are completely different components and are not interchangeable under any circumstances. Diesel 308s use high-pressure common-rail injectors designed to work with compression ignition, while petrol engines use a different design operating at much lower (or in the case of direct injection, differently calibrated) pressures. Always confirm your fuel type and engine code with the breaker so they can supply the correct part.

This is something you will need to confirm with your fitting garage and the breaker, as some 308 engines — particularly later common-rail diesel units — may require injector codes to be programmed into the ECU after fitting for accurate fuelling. This is not something that can be stated as a blanket rule here, as it depends on the specific engine and the diagnostic equipment available. Ask the breaker whether the injector comes with its calibration code, and check with your mechanic before purchasing.