745-289120N
Air Brake Supply Reservoir Valve
Mack

This valve plays a vital role in managing air pressure within the truck’s brake system. It regulates the flow of compressed air to the brake reservoir, ensuring consistent pressure levels necessary for effective braking performance. The valve’s precise operation helps prevent air leaks and maintains system integrity, which is critical for vehicle safety. Its durable construction withstands the rigors of daily heavy-duty use, resisting corrosion and wear. Proper maintenance and replacement of this component are essential for optimal brake function and compliance with safety standards. Source One Parts Center provides this valve as a reliable part to support the safety and efficiency of your truck’s air brake system.