303.11.0004.01 Compatible Gearbox Valve Repair Kit — Volvo & Renault

What is a gearbox valve repair kit?

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. These kits are essential for maintaining the hydraulic or pneumatic flow that governs gear shifts, clutch pressure, and internal lubrication within the transmission system.

Compatible vehicles and engines

This kit is compatible with various Volvo heavy-duty vehicles, including the B10M, FH12, NH12, FM12, FL10, FL12, VHD, B12, F10, FH16, FM10, VNL, NL10, B10B, F12, and NL12 models. It is also fitted to Renault Trucks Magnum units. These components ensure that the transmission's response speed and line pressure remain within operational standards.

Installation and maintenance

When performing maintenance, technicians should focus on inspecting the spool, springs, o-rings, and seals. Replacing these worn elements can prevent larger system failures. It is vital to verify the transmission serial number to ensure the kit matches the specific valve body dimensions used in your vehicle.

Troubleshooting gear shifts

Proper installation helps restore original shift quality in manual and automated manual transmissions. Always check for leaks or pressure fluctuations after assembly to ensure the system is fully operational.

OE cross-reference

303.11.0004.01 (Gearbox Valve Repair Kit Transmission Valve) is the equivalent of the Renault Trucks and Volvo OE numbers. This part directly replaces Renault Trucks OE number 7401672231S1. It also replaces Volvo OE number 1672231S1.