Used Mercedes-Benz GLB Fuel Injector

Fuel injectors exist on all GLB engine variants because every GLB engine — whether petrol or diesel — uses direct or port injection; this is not a part limited to a specific drivetrain layout. The GLB was sold in the UK with a range of four-cylinder turbocharged petrol (M264) and diesel (OM654) engines, and all of them rely on fuel injectors to deliver fuel into the combustion chamber. What does vary significantly is the injector design, operating pressure, and connector type between petrol and diesel units, so getting the fuel type right is essential before sourcing a used injector.

The engine code is the single most important detail for matching a GLB fuel injector, because injector specification follows the engine, not the badge or trim level. Common UK-market engine codes include the M264 family for petrol variants (covering the GLB 200 and GLB 250) and the OM654 family for diesel variants (covering the GLB 200d and GLB 220d). You can find your engine code on your V5C logbook or by running a VIN check, and supplying it directly to the breaker will allow them to confirm an accurate match far more reliably than quoting the model name alone.

Yes, year still matters even within the single GLB generation (X247), which launched in the UK from 2019 onwards. Mercedes introduced a facelift to the GLB around 2023, and while the core engine families carried over, ancillary specifications and component revisions can occur mid-production without a formal generation change. For this reason, always confirm with the breaker against your registration whether an injector from a different model year within the X247 range is a direct match for your specific build date.

The 2023 facelift marks a production boundary you should treat with caution when sourcing a used fuel injector. Both pre- and post-facelift GLBs share the same X247 platform and broadly the same engine codes, which makes a direct swap plausible in many cases, but component revisions mid-production mean you cannot assume interchangeability across that boundary without checking. Supply the breaker with your full registration or VIN so they can compare the part numbers against their donor vehicle and confirm the injectors are the same specification.

Trim level does not affect fuel injector fitment on the GLB — the injector is determined by the engine code, not whether the car is a Sport, AMG Line, AMG Line Premium, or any other UK trim variant. All of those trims were offered with the same engine options, so two GLBs with identical engine codes will take the same injector regardless of what badge is on the tailgate. When buying from a breaker, the donor car may have different interior trim or exterior styling, but none of that affects whether the injector itself is compatible with your vehicle.

Fuel injectors on modern Mercedes-Benz engines, including those used in the GLB, can in some cases require programming or calibration data to be updated in the engine management system after replacement. Whether this applies to your specific engine code and whether a used injector from a breaker will require any ECU-side work is something you should confirm with the breaker and your fitting garage before purchasing. A qualified Mercedes-Benz specialist or independent with the correct diagnostic equipment will be best placed to advise on any coding requirements for your exact vehicle.