Mercedes-Benz GLB Brake Servo Replacement Parts

The GLB (X247, launched 2019) is fitted with an electric brake booster rather than a traditional vacuum-operated brake servo, as part of its modern electro-hydraulic braking system. This means there is no conventional brake servo unit to source as a standalone used part in the traditional sense. If your brake assistance has failed, the part you are likely looking for is the electric brake booster or iBooster unit, so search for that term when contacting breakers.

The GLB has been sold as a single generation (X247) from 2019 onwards, with a facelift arriving in 2023, but because the GLB uses an electric brake booster rather than a conventional vacuum brake servo, there is no traditional servo unit to swap between model years. The electric brake booster is the relevant component, and whether a pre-facelift unit is compatible with a post-2023 facelift car is something you should confirm with the breaker against your registration, as software and connector differences can apply. Make sure you are searching for the correct part type before requesting quotes.

Because the GLB does not use a conventional vacuum brake servo at all, engine size is not a relevant consideration in the way it would be on an older vehicle. The electric brake booster fitted across the GLB range does vary by braking system specification, and a GLB 200 may differ from a GLB 220 4MATIC or AMG Line variant in braking hardware, so you should confirm the exact part against your registration with the breaker. Searching for 'GLB electric brake booster' rather than 'brake servo' will get you more accurate results.

Trim level alone does not determine brake system fitment on the GLB, and the GLB does not use a traditional brake servo regardless of whether the car is finished in Sport, AMG Line, or Progressive specification. The braking hardware is linked more closely to the drivetrain and engine variant than to trim name. That said, if your car has an AMG Line or 4MATIC specification with uprated brakes, confirm the exact brake booster part with the breaker against your registration to be safe.

On the GLB, the component that provides brake assistance is an electric brake booster, sometimes called an iBooster or electro-hydraulic brake unit, not a conventional vacuum brake servo. When contacting breakers on Findapart, search using those terms and provide your full registration so they can verify the correct unit for your specific engine and drivetrain variant. A 4MATIC all-wheel-drive GLB may use slightly different braking system components to a front-wheel-drive model, so the registration is important.