About this part
What it does. Zimmermann Rotor Zimmermann 757-400.5550.53 is the disc the brake pads clamp onto to convert motion into heat and stop the wheel.
Symptoms that point to this part
- Pulsing brake pedal or steering wheel shudder
- Deep scoring or a lip on the disc face
- Blue heat spotting
Service note. Rotors are replaced in pairs per axle, together with fresh pads.
Fitment. Catalogued as fitting 2021 Mercedes-Benz A35 Amg, 2021 Mercedes-Benz Cla35 Amg, 2020 Mercedes-Benz Cla45 Amg. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.