PB stands for power brakes, a system that uses engine vacuum or a hydraulic pump to multiply the force applied to the brake pedal. It reduces driver fatigue and allows for smaller pedal travel while achieving higher clamping force at the calipers or shoes. The abbreviation frequently appears in classified ads, build sheets, and older service manuals to distinguish power-assisted models from those with manual brakes.
Heard on the job
It's a matching numbers car with PS and PB, making it a great daily driver.
Also heard as
- power brakes