21707055 Volvo FMX D13K Exhaust Brake Valve

What does an exhaust brake valve do?

This exhaust brake valve plays a vital role in the engine braking system of heavy commercial vehicles. By regulating the flow of exhaust gases, it assists in reducing vehicle speed during deceleration, which helps minimize wear on the primary service brakes and improves overall safety for fleet operators.

Compatible vehicles and engines

The component is engineered for compatibility with Volvo FMX models (including 410, 450, and 500 variants) and Volvo FM models (ranging from 300 to 500 series) utilizing D13K engines. This ensures precise integration within the engine's pneumatic control circuit.

Installation and maintenance

For workshop technicians, ensuring correct installation is key to maintaining optimal braking performance. Regular inspection of the valve housing and connections is recommended to prevent leaks or pressure drops within the exhaust system. Check the compatibility list to confirm exact fitment.

System performance guidance

Maintaining a high-performance engine brake system requires selecting high-strength components that withstand thermal cycling and high-pressure environments common in heavy-duty operations.

OE cross-reference

303.11.0057 (Exhaust Brake Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21707055.