303.01.0018 Relay Valve compatible with Volvo and Mack

What does a relay valve do?

A relay valve is a critical component in the compressed air brake systems of heavy-duty vehicles, ensuring rapid air pressure transfer triggered by a pilot signal. This component plays a vital role in maintaining braking efficiency by directing air to the brake chambers promptly.

Vehicle and engine compatibility

This specific relay valve is engineered for high-performance operation in heavy commercial vehicles including Volvo FH series, Renault Trucks Premium, and Mack Granite. It is also compatible with various models from DAF, MAN, Mercedes-Benz, and Scania trucks. These parts are designed to support heavy-duty applications across diverse engine configurations such as Volvo D13 and Renault DXi13.

Installation and technical specifications

Installation should be performed by a qualified workshop technician to ensure proper seal integrity. The unit features specialized VOSS connections including M22x1,5 and M16x1,5 port sizes to ensure a precise fit. Maintaining correct air pressure levels within the 13 BAR maximum limit is essential for optimal system response.

Maintenance and selection guidance

To ensure correct fitment for your specific fleet requirements, always verify the connection types and port configurations before replacement. Consult your authorized distributor for more information.

OE cross-reference

303.01.0018 (Relay Valve Relay Valves) is the equivalent of the DAF, MAN, Mercedes-Benz, Renault Trucks, Scania, Volvo and WABCO OE numbers. This part directly replaces DAF OE number 1518271. It also replaces MAN OE number 81521166089, Mercedes-Benz OE number 0044299444, Renault Trucks OE number 5010588270, Scania OE numbers 1413698, 1935668, 2038219, Volvo OE number 20733197 and WABCO OE number 9730113000.