Cheap Peugeot 408 Fuel Injector

Yes, but only on petrol-engined variants — the 408 has been offered with petrol engines that use port or direct fuel injection depending on the generation and engine fitted, so injectors are a genuine part on those variants. If your 408 is diesel, it will also have injectors, but diesel common-rail injectors are a very different and more complex part than petrol injectors, so make sure you specify your fuel type clearly when requesting a quote. In either case, the engine code is the critical detail — locate it on your V5C or via a VIN check before contacting a breaker.

The original Peugeot 408 (first generation, produced approximately 2010–2014) and the second-generation 408 (produced approximately 2014 onwards in markets where it continued) used different engine families, so injectors are not expected to cross between generations. The engine code is the definitive check here — if both cars share the same engine code, compatibility becomes more plausible, but you should confirm this directly with the breaker against your registration before purchasing. Never assume a part crosses a generational boundary without that verification.

Trim level does not affect fuel injector fitment on the Peugeot 408 — Active, Allure, and GT Line trims fitted with the same engine code will use the same injectors regardless of what badge is on the car. What matters is the engine code, fuel type, and the specific engine variant, not whether the car has extra equipment or a higher specification. Supply the breaker with your engine code and registration and ignore the trim entirely when discussing the injector itself.

The 1.6 THP engine family was used across multiple PSA group vehicles and across several years, but injector specifications can vary depending on the exact engine code suffix and the production year of the vehicle, so the year does matter and the engine code is more reliable than the displacement alone. Two cars both described as '1.6 THP' could have slightly different injector specifications if their engine codes differ, so always cross-reference the full engine code rather than relying on the capacity or power output. Give the breaker your full engine code and registration for the most accurate match.

No — petrol and diesel fuel injectors are completely different components and are not interchangeable under any circumstances; diesel common-rail injectors operate at vastly higher pressures and have an entirely different design to petrol injectors. When searching for a used injector, specify your fuel type immediately so the breaker can pull from the correct donor vehicle. Fitting the wrong type would cause serious engine damage, so this is not a compatibility question that needs further investigation — they simply do not cross over.

This is a genuine consideration with used injectors, particularly on later common-rail diesel engines where injectors can be coded to the ECU and may require recalibration data to be programmed in after fitting — petrol injectors are generally less involved in this regard but can still vary. Whether your specific injector requires coding is something you should confirm with the breaker and ideally with a Peugeot specialist or auto-electrician before buying a used unit, as this is not something that can be confirmed as fact here. Factor potential coding costs into your budget before committing to a used part.