21136656 Piston and Ring for Volvo FM11 D11B

What does a compressor piston and ring do?

This compressor piston and ring set is essential for maintaining the efficiency of the air brake compressor system. The piston and rings work together to ensure proper compression cycles, which are critical for the pneumatic braking performance in heavy commercial vehicles. These components are manufactured from high-strength materials to withstand the intense thermal and mechanical stresses encountered during continuous operation.

Compatible vehicles and engines

This specific kit is designed for Volvo FM11 trucks equipped with D11B engines. It serves as a reliable replacement for original components, ensuring the compressor maintains optimal pressure levels within the braking circuit. The piston features a standard diameter of 80.00mm to ensure correct fitment within the cylinder liner.

Installation and maintenance

For workshop technicians, verifying the cylinder bore and existing ring groove clearances is highly recommended before installation. Maintaining proper lubrication and checking the piston pin diameter ensures long-term durability of the compressor assembly. Always consult the vehicle's service manual to confirm exact tolerances during the overhaul process.

Troubleshooting and selection

Check the compatibility list.

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.