Buy OEM GENERAL MOTORS Part # 20800045 (20762405). Power Brake Booster. STS-V. Brake Power Booster Unit - Repair or Replace If you have a brake pedal that is suddenly stiff or you hear a

Booster Assembly - P/B. Power Brake Booster.
Power Brake Booster.

Power Brake Booster

Fits STS

STS-V.
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 .