306.02.0086 Renault and Volvo Clutch Master Cylinder

What does a clutch master cylinder do?

The clutch master cylinder converts pedal force into hydraulic pressure, pushing it through the clutch line to the slave cylinder. As a safety-critical component within the hydraulic control line, it ensures that gear changes remain smooth and predictable during heavy-duty operation.

Compatible vehicles and engines

This component is designed for high-performance compatibility with Volvo models including FH series, FM series, FMX, VHD, and VNL, as well as Renault Trucks models such as Kerax, Magnum, and Premium. It is also fitted to Mack Granite and Pinnacle trucks with MP7 or MP8 engines.

Installation and maintenance

To maintain optimal hydraulic efficiency, technicians should inspect the unit during regular clutch system service intervals. Ensuring the hydraulic line connections are secure helps prevent pressure drops. This part is built with high-strength components to withstand intensive daily use in heavy commercial vehicles.

Selection guidance

Consult your authorized distributor to ensure exact fitment for your specific engine configuration.

OE cross-reference

306.02.0086 (Master Cylinder) is the equivalent of the Knorr-Bremse, Renault Trucks and Volvo OE numbers. This part directly replaces Knorr-Bremse OE numbers K032123K57, K032123N50, MC28PLA. It also replaces Renault Trucks OE number 7421564396 and Volvo OE numbers 21232945, 21564394.