Shop OEM BMW Part # 34336864668 (34-33-6-864-668). Power Brake Booster. Cooper; w/o SE Model; w/o John Cooper Works. Mini Cooper; w/o JCW Package. Brake Power Booster Unit - Repair or

Brake. Booster. Power.
Power Brake Booster.

Power Brake Booster

Fits Cooper

Cooper; w/o SE Model; w/o John Cooper Works. Mini Cooper; w/o JCW Package.
Brake Power Booster Unit - Repair or Replace
If you have a brake pedal that is suddenly stiff or you hear a whistling noise when you step on your brakes—especially when you're stopped—the culprit may be a failed brake booster. Our technicians can easily diagnose a possible brake booster failure in your .