21136656 Compatible Volvo FMX D13C Piston and Ring

What does a compressor piston & ring do?

This compressor piston and ring set functions as a critical component within the pneumatic air brake compressor, ensuring efficient air compression and system pressure stability. These parts are manufactured using high-strength components to withstand the intense thermal and mechanical stresses found in heavy commercial vehicle braking systems.

Compatible vehicles and engines

Specifically designed for Volvo FMX trucks featuring the D13C engine, this unit ensures precise fitment for the compressor assembly. The piston is engineered to work seamlessly within the cylinder to maintain optimal compression cycles under heavy-duty operating conditions.

Installation and maintenance

For professional installation, technicians should verify the cylinder liner condition and ensure that all ring grooves are clean of debris. When replacing these components, it is essential to check that the diameter matches the current bore to prevent improper sealing or premature wear of the air brake system.

Troubleshooting and selection

Maintaining regular inspection of compressor internals helps prevent sudden pressure loss in the braking circuit. Always consult the vehicle manufacturer's service manual to confirm exact clearance requirements during assembly.

OE cross-reference

7000 801 100 (Compressor Piston & Ring) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21136656.