21136656 Piston & Ring for Volvo FM13 D13A

What does a compressor piston and ring do?

This compressor piston and ring set is designed to maintain optimal pressure within the air brake compressor system. These components work together to ensure efficient air compression, which is critical for the braking performance of heavy commercial vehicles. Built with high-strength components, they are engineered to withstand the intense thermal and mechanical stresses found in heavy-duty pneumatic systems.

Compatible vehicle and engine fitment

This specific kit is compatible with Volvo FM13 trucks equipped with D13A engines. It serves as a reliable replacement for worn or damaged internal components, helping to restore the compression efficiency of the original air brake compressor. Check the compatibility list to ensure exact fitment.

Installation and maintenance guidance

For proper installation, technicians should verify the piston diameter and ring groove clearances against the vehicle manufacturer's service manual. It is essential to inspect the cylinder liner for wear before installing new pistons to ensure long-term sealing and prevent premature failure of the new rings.

System performance and troubleshooting

Maintaining the air compressor by replacing pistons and rings at recommended intervals can prevent system-wide pressure drops and ensure consistent braking response across all pneumatic circuits.

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.