178-1030 | Genuine ACDelco® Power Brake Booster Assembly EGR Bracket (Applies to belt-driven compressors with

(Applies to belt-driven compressors with a clutch)

Signs of a Bad DEF Sensor Head T434814:

The header provides sensor data that helps the ECU determine:

Continuous or Frequent PurgingIf the air dryer purges more often than usual or continuously

may indicate a faulty shutoff valve

178-1030 | Genuine ACDelco® Power Brake Booster Assembly EGR Bracket (Applies to belt-driven compressors withDescription: A Power Brake Booster Assembly 178 1030 (often just called a brake booster) is a key component in a vehicles braking system that helps reduce the amount of physical effort needed to press the brake pedal and stop the vehicle. The brake booster uses vacuum pressure (or sometimes hydraulic or electric pressure) to amplify the force you apply to the brake pedal. Without it, youd have to press the pedal much harder to slow or stop the