8235-R955KN28500
Air Brake Relay Valve
Mack

The air brake relay valve is a key component in the truck’s air brake system, responsible for controlling the application and release of brake pressure. It acts as an intermediary, amplifying the driver’s brake signal to ensure timely and effective braking response across all wheels. Proper functioning of this valve is critical for maintaining safe stopping distances and overall vehicle control. Its durable construction withstands high-pressure environments and frequent operation cycles. Regular testing and replacement are necessary to prevent brake failure and ensure compliance with safety standards. Source One Parts Center provides reliable relay valves that meet heavy-duty specifications, ensuring your braking system performs optimally in demanding conditions.