3953045 Volvo FL12 Clutch Master Cylinder

What does a clutch master cylinder do?

This clutch master cylinder serves as a critical component within the hydraulic clutch system, converting pedal pressure into hydraulic force to facilitate smooth gear engagement. It is engineered with heavy-duty grade materials to withstand the high-pressure demands and thermal fluctuations typical in heavy commercial vehicle applications.

Vehicle compatibility and engine fitment

The component is specifically designed for Volvo FL12 trucks equipped with TD122 engines. It provides precise hydraulic modulation to ensure reliable engagement and disengagement of the clutch assembly under heavy loads.

Installation and maintenance guidance

Installation and maintenance should be performed by a professional workshop technician. When inspecting the system, check the Ø 23,81 mm port for any signs of fluid leakage and ensure the hydraulic lines are properly seated. Regular inspections of seals and pistons are recommended to prevent sudden system failure.

Troubleshooting clutch hydraulic issues

If you notice a spongy pedal or delayed gear engagement, it may indicate internal wear or air in the lines. Maintaining the hydraulic fluid levels and ensuring a clean environment during replacement helps extend the service life of the unit.

OE cross-reference

306.02.0021 (Master Cylinder) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 3953045.