303.03.0024 Volvo Compatible Cab Suspension Levelling Valve

What does a cab suspension levelling valve do?

This cab suspension levelling valve plays a critical role in maintaining the equilibrium of the cabin's pneumatic system. By regulating air pressure within the bellows, it ensures that the cabin remains level and stable even under varying load conditions. This component is essential for driver comfort and long-term structural integrity of the cabin mounting points.

Compatible vehicles and engines

This part is compatible with several heavy commercial vehicle models, including Volvo FH, FM, VNL, and FMX series, as well as Renault Trucks Kerax, Magnum, and Premium. It is also fitted to Mack Granite and Pinnacle trucks with MP7 or MP8 engines. This component is designed to function reliably within the specific pneumatic architecture of these vehicles.

Installation and maintenance

For optimal performance, technicians should inspect the valve during routine suspension maintenance. Ensure that all air connections are secure and that the lever mechanism moves freely without obstruction. Replacing worn valves can prevent uneven cab tilt and reduce unnecessary vibration within the driver's workspace.

Troubleshooting guidance

If you observe inconsistent cabin height or air leaks near the suspension bellows, it may indicate a failure in the levelling mechanism. Always verify compatibility with your specific vehicle model before installation. Consult your authorized distributor.

OE cross-reference

303.03.0024 (Cab Suspension Levelling Valve) is the equivalent of the Volvo and WABCO OE numbers. This part directly replaces Volvo OE number 21304773. It also replaces WABCO OE number 4640070250.