Second Hand BMW M4 Fuel Injector

Yes, fuel injectors absolutely exist on the BMW M4 – all M4 generations use petrol engines with direct fuel injection, so injectors are a genuine and important service part on this car. The F82 M4 (2014–2020) uses the S55 twin-turbocharged 3.0-litre inline-six with high-pressure direct injectors, and the G82 M4 (2021–present) uses the S58 twin-turbocharged 3.0-litre inline-six, again with direct injection. When searching for a used set, the engine code is the most critical detail to match – S55 and S58 injectors are not the same part despite the engines looking similar on paper.

Both a 2016 and a 2019 M4 fall within the F82 generation (2014–2020), and both use the S55 engine, so on paper the injectors come from the same engine family. However, BMW made running production changes during this generation and it is worth confirming with the breaker whether the specific injector part number matches your registration before buying. Supply your engine code from the V5 or a VIN check to give the breaker the best chance of finding a confirmed match.

For fuel injectors, the Competition trim does not introduce a different engine – both the standard F82 M4 and the M4 Competition use the S55 engine, and both the standard G82 M4 and the M4 Competition use the S58 engine, so the trim level itself does not change injector fitment. The Competition package adds suspension, software, and interior upgrades rather than mechanical engine differences that would alter the injectors. Focus on the engine code and model year rather than the Competition badge when sourcing a used injector from a breaker.

The F82 uses the S55 engine and the G82 uses the S58 engine, and these are fundamentally different units, so injectors from an F82 M4 will not be a straight swap onto a G82 M4. This is a clear generation boundary and the parts are not interchangeable. Always match injectors to the specific engine code – S55 for F82, S58 for G82 – and confirm part numbers with the breaker against your registration before purchasing.

Direct injection systems on modern BMWs can involve injector calibration or adaptation values that the ECU learns over time, and whether a used injector requires coding or adaptation on the S55 or S58 is something you should confirm with your fitting garage rather than assume. This is not something we can state as a blanket rule, so raise it with the breaker and your mechanic before committing to a purchase. A good independent BMW specialist will be able to advise whether the injectors need calibrating after fitting.

Despite sharing a 3.0-litre inline-six layout, the M4's S55 (F82) and S58 (G82) engines are not the same units as the B58 found in the 340i or M340i, and the injectors are different parts designed for different fuel pressure specifications and ECU calibrations. Fitting injectors from a non-M engine into an M4 is not a straightforward or recommended swap. Always source injectors that match your exact engine code, and confirm compatibility with the breaker using your registration or VIN.