745-103009RX
Air Brake Relay Valve
Mack

This critical component in the air brake system manages the distribution of compressed air to various brake chambers, ensuring synchronized and reliable braking performance. Its precise operation is vital for maintaining vehicle safety, especially under heavy loads and extended driving conditions. The relay valve responds quickly to driver inputs, modulating air pressure to achieve smooth and controlled stops. Its robust design resists wear and environmental factors, providing long-lasting service. Proper functioning of this valve is essential for compliance with safety standards and for preventing brake failure. Source One Parts Center supplies this relay valve as a dependable replacement, helping maintain the integrity of your truck’s braking system for safe operation.