303.01.0017.01 Repair Kit, Relay Valve — WABCO

The heavy duty repair kit provides essential maintenance for relay valve systems within the pneumatic braking architecture of heavy commercial vehicles. This component is engineered to restore optimal air pressure regulation and response times, ensuring the braking system operates with precision and safety under demanding transport conditions.

This 303.01.0017.01 product is the OE-equivalent of the WABCO 973 011 006 2 relay valve repair kit used in DAF, RENAULT TRUCKS, VOLVO, and PACCAR vehicle systems. By utilizing high-strength components, this kit maintains the integrity of the relay valve assembly, preventing air leaks and ensuring consistent pneumatic control during critical braking operations.

Workshop technicians can rely on this kit for efficient assembly and maintenance of the brake system's relay valves. It is designed for direct compatibility with specific WABCO hardware to facilitate seamless integration during routine service or system overhauls. Regular inspection and timely replacement of these components help maintain optimal heavy-duty vehicle performance and service intervals.

Proper installation ensures that the pneumatic signal reaches the brake actuators without delay, maintaining the stability of the entire braking circuit in trucks and heavy-duty vehicles.