Used Mercedes-Benz GLB Throttle Body

The GLB is exclusively turbocharged across all its engine variants — petrol and diesel — and turbocharged engines do not use a traditional throttle body in the same way a naturally aspirated engine does; instead they manage airflow differently and what might loosely be called a throttle body is typically an electronic throttle actuator integrated into the intake system. Whether a replaceable throttle body or throttle actuator unit exists as a discrete serviceable part on your specific GLB engine depends on the exact engine code, so this is worth confirming with a breaker against your registration before searching. If you are chasing a fault code related to airflow or throttle response, the part you actually need may be the intake manifold flap motor, EGR valve, or a turbo-side component rather than a conventional throttle body.

For the GLB the engine code is the single most important detail — the range covers petrol engines including the M260 four-cylinder unit used in the GLB 200 and GLB 250, and diesel engines including the OM654 family used in the GLB 200d and GLB 220d, each of which has different intake and airflow hardware. Your engine code appears on your V5C or can be retrieved via a VIN check, and supplying it to the breaker will allow them to pull the correct part from the donor vehicle rather than matching on badge or displacement alone. Fuel type matters too, as petrol and diesel intake systems are entirely different.

The GLB X247 generation launched in 2020 and received a facelift in 2023, and while the core engine families carried across that boundary, there can be ancillary and mounting changes mid-production that affect whether intake components interchange directly. You should confirm with the breaker against both registrations whether the specific actuator or throttle-related part from a pre-facelift donor suits your post-facelift car, as this is exactly the kind of detail that varies and cannot be guaranteed from year alone. Matching engine codes on both vehicles gives the breaker the best chance of confirming compatibility.

Trim level — whether your GLB is in SE, Sport, AMG Line, or AMG Line Premium specification — does not affect throttle body or throttle actuator fitment because these are mechanical engine components tied to the engine code, not to the interior or exterior package. A part pulled from an AMG Line donor with the same engine code as your SE car should be mechanically equivalent, though cosmetic surroundings under the bonnet may look slightly different between builds. Always match on engine code first and confirm with the breaker.

The GLB 220d uses a diesel engine from the OM654 family, and diesel engines do not use a conventional throttle body in the way petrol engines traditionally do; instead they use a throttle flap or intake air control valve to manage airflow for emissions and EGR purposes, which is a different component sometimes mistaken for a throttle body. If you are diagnosing a fault, the part you need is more likely described as an intake manifold pressure flap, swirl flap actuator, or EGR-related valve, and describing your symptom and fault code to the breaker will help them identify the correct part from the donor vehicle. Supply your engine code from the V5C for the most accurate match.

Both the front-wheel-drive and 4MATIC versions of the GLB 250 use the same M260 petrol engine family, so in principle the engine-side components are common, but whether the specific intake or throttle actuator hardware is identical between driveline variants is something to confirm with the breaker against both registrations. The 4MATIC drivetrain does not itself change the throttle hardware, but ancillary bracket or mounting differences can sometimes appear between build variants. Match engine codes and let the breaker verify before purchase.