301.02.0044 Compatible Air Dryer Valve — WABCO

What does an air dryer valve do?

This air dryer valve plays a critical role in the pneumatic brake system by managing moisture and contaminants within the air circuit. It is engineered using high-strength components to withstand the rigorous pressure demands of heavy commercial vehicles, ensuring consistent air quality throughout the braking system.

Compatible vehicles and engines

This component is designed for compatibility with MAN and Scania trucks. It functions effectively within systems requiring precise pressure regulation, providing a reliable alternative for fleet maintenance professionals. The unit is also compatible with WABCO systems.

Installation and maintenance

Installation should be performed by a workshop technician to ensure all port connections are secure. This valve features specific threading, including M22x1.5 and M12x1.5 ports, which must be checked against existing line connections to ensure a correct fit. Regular inspection of the pneumatic lines is recommended to maintain optimal performance.

Troubleshooting guidance

Monitoring the air dryer valve for leaks or pressure drops can help prevent moisture buildup in the brake lines, protecting other pneumatic components from corrosion and wear.

OE cross-reference

301.02.0044 (Air Dryer Valve Air Dryer Valves) is the equivalent of the MAN, Scania and WABCO OE numbers. This part directly replaces MAN OE number 81521026076. It also replaces Scania OE number 390854 and WABCO OE number 4324100050.