745-283940RX
Relay Valve
Mack

The relay valve is an essential component in air brake systems, controlling the application and release of air pressure to the brake chambers. Its precise operation ensures consistent and responsive braking performance, which is critical for vehicle safety. Constructed from durable materials, it withstands the rigors of frequent use and high-pressure environments. Proper maintenance and timely replacement of the relay valve are vital to prevent brake failure and ensure reliable operation. This component plays a key role in maintaining optimal brake response, especially in heavy-duty applications. Source One Parts Center provides this reliable relay valve to support your vehicle’s safety and operational efficiency.