8172824 Volvo FH12 D12D Compatible Clutch Master Cylinder

What does a clutch master cylinder do?

This clutch master cylinder serves as a critical component in the vehicle's clutch system, converting mechanical pedal force into hydraulic pressure to actuate the slave cylinder. Built with high-strength components, it ensures consistent pressure delivery even under heavy-duty operating conditions.

Vehicle and engine compatibility

This specific unit is compatible with Volvo FH12 trucks equipped with D12D engines. It is also fitted to other heavy commercial vehicle applications requiring precise hydraulic actuation.

Installation and maintenance

For proper installation, technicians should verify that the Ø28.57 mm port matches the existing hydraulic line specifications. Regular inspection of the seals and push rod movement is recommended to prevent pressure loss within the system.

Troubleshooting guidance

When troubleshooting clutch engagement issues, check this unit for leaks or internal bypass. Replacing the complete unit is often more efficient than individual component repair to ensure long-term reliability in the field.

OE cross-reference

306.02.0020 (Master Cylinder) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 8172824.