21136656 Piston & Ring for Volvo FM13 D13B

What does a compressor piston and ring do?

This compressor piston and ring kit is essential for maintaining the efficiency of the pneumatic brake system. These high-strength components are engineered to withstand the intense pressure and thermal cycles typical of heavy commercial vehicle compressors, ensuring consistent air compression and system reliability.

Compatible Volvo engines and models

This specific assembly is compatible with Volvo FM13 trucks equipped with D13B engines. It serves as a precise replacement for original components in the air brake compressor assembly, helping to restore optimal air pressure levels in the braking circuit. Check the compatibility list to ensure correct fitment for your specific engine configuration.

Installation and maintenance guidance

For professional installation, technicians should verify the piston diameter and cylinder liner condition. Proper groove clearance and end gap measurements are critical during assembly to prevent premature wear. Maintaining correct lubrication levels during installation helps ensure the longevity of these heavy-duty grade materials.

Troubleshooting and inspection

Regular inspection of the piston and rings can prevent sudden air pressure loss in the vehicle's braking system. If air leakage or reduced pressure is observed, evaluating the piston and ring condition is a recommended troubleshooting step.

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.