About this part
What it does. Wagner Brake Rear Disc Brake Rotor Wagner Brake 621-BD180548E 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 2019–2020 BMW 440i Xdrive, 2019–2020 BMW 440i Gran Coupe, 2019–2020 BMW 440i Xdrive Gran Coupe, 2019 BMW 340i Gt Xdrive, 2019 BMW 440i. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.