303.11.0023.01 Volvo Compatible Gearbox Valve Repair Kit

What does a gearbox valve repair kit do?

A gearbox valve repair kit is a replacement component set used to overhaul the shift and pressure control valves inside heavy commercial vehicle transmissions without swapping the entire valve assembly. The valves inside a transmission direct hydraulic or pneumatic oil flow, governing gear shifts, clutch pressure, and internal lubrication. Over time, parts such as the spool, spring, o-ring, seal, and gasket wear down and disturb the valve's precise operation; rather than replacing the whole valve body, a valve repair kit renews only the worn internal components.

Compatible Volvo vehicles and engines

This specific kit is engineered for compatibility with a wide range of Volvo heavy-duty applications. It is fitted to various models including the FH12, FH16, NH12, FM12, NL10, B12, FL10, FL12, VNL, B10B, VHD, F12, FM10, F10, NL12, and B10M. It supports diverse engine configurations such as the D12A, D12C, D16C, D10A, and DXi12 engines found in these heavy commercial vehicles.

Installation and maintenance guidance

For workshop technicians performing maintenance, it is essential to verify the transmission model and serial number to ensure correct fitment. When installing these components to restore shift quality and response speed, ensure all surfaces are clean and that the internal spools and seals are seated according to manufacturer specifications. Consult your authorized distributor for more information.

OE cross-reference

303.11.0023.01 (Gearbox Valve Repair Kit Transmission Valve) is the equivalent of the Volvo OE numbers. This part directly replaces Volvo OE numbers 1653074S1, 1669277S1, 1669324S1, 3091916S1, 3092123S1, 3095080S1.