Shop OEM BMW Part # 34331162963 (34-33-1-162-963). Power Brake Booster. 318i, is, iC. 318ti. 323is, iC. 328i, Ci. 328is, iC. Z3. Z3; 2.5L. Z3; 2.8L. Z3; 3.0L. Brake Power Booster Unit -

Brake. Booster. Power.
Power Brake Booster.

Power Brake Booster

Fits 318i, 318is, 318ti, 323i, 323is, 325i, 328i, 328is, Z3

318i, is, iC. 318ti. 323is, iC. 328i, Ci. 328is, iC. Z3. Z3; 2.5L. Z3; 2.8L. Z3; 3.0L.
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 .