745-800492
Air Brake Relay Valve
Mack

This vital component manages the distribution of compressed air within the braking system, ensuring consistent and reliable brake operation across the vehicle. It acts as a control device that modulates air pressure, enabling smooth and responsive braking response. The relay valve's robust design is engineered to withstand the rigors of heavy-duty use, resisting corrosion and mechanical stress. Proper functioning of this valve is essential for maintaining safe stopping distances and overall vehicle safety. Regular inspection and replacement of this part are crucial for fleet safety compliance. Source One Parts Center supplies this high-quality relay valve, helping you maintain optimal brake system performance in demanding conditions.