Used Alfa Romeo 155 Fuel Injector

The 155 used fuel injection across its engine range from launch in 1992 through to the end of production in 1998, so fuel injectors are genuine parts on this model. Both the petrol and diesel variants used injection systems, though the injector type differs significantly between them. When searching for a used injector, make clear to the breaker whether your car is petrol or diesel, as these are completely different components.

Yes, the engine code is the most important detail you can supply — injectors are matched to the specific engine, not just the model year or badge. Two 155s from the same year could have entirely different engines and completely incompatible injectors. Your engine code appears on your V5C or can be retrieved via a VIN check, and giving it to the breaker is the single most useful thing you can do before asking for a quote.

The 155 ran from 1992 to 1998 with a facelift arriving in 1995 that brought some engineering updates alongside the styling changes, so there is a meaningful boundary to be aware of here. Whether an injector crosses that 1995 line depends on whether the engine code is identical in both cars, as some engines carried across the facelift unchanged while others were revised. Name your engine code clearly when contacting a breaker and ask them to confirm the injector matches your specific registration rather than assuming year alone is sufficient.

Trim level on the 155 does not directly determine injector fitment — what drives compatibility is the engine code fitted to that trim. The Cloverleaf models were fitted with higher-performance engines, so they will naturally require injectors matched to those specific units, but that is an engine difference rather than a trim difference per se. As long as the engine codes match between donor and recipient car, trim level is not a barrier to fitment.

No — diesel and petrol injectors on the 155 are entirely different components operating on different principles and are not interchangeable under any circumstances. Diesel injectors on the 155 were fitted to the VM-sourced turbodiesel engines and operate at much higher pressures than petrol injectors. Always confirm to the breaker whether your car is petrol or diesel before requesting a quote, and also supply the engine code so they can match the correct unit precisely.

The Twin Spark engines used in the 155 have a different specification to the earlier single-plug petrol units, and the injectors may not be a straightforward swap even where displacement looks similar on paper. The safest approach is to supply your exact engine code to the breaker and ask them to cross-reference it against the donor vehicle's code rather than relying on engine size or model name alone. Never assume fitment based on badge or capacity — the engine code is the definitive reference.