7421707055 Compatible Exhaust Brake Valve — Renault Trucks K

What does an exhaust brake valve do?

This exhaust brake valve is a critical component within the engine braking system of heavy commercial vehicles. It functions by restricting the flow of exhaust gases, which allows the engine to utilize compression braking to assist in vehicle deceleration. By managing gas flow through the exhaust manifold outlet, it provides essential braking support during long descents or heavy loads.

Vehicle and engine compatibility

This specific valve is designed to fit various Renault Trucks K series models, including the 380T, 430T, 460T, 380P, 430P, 460P, and 520P configurations across both medium and heavy duty variants. It is also compatible with several other Renault Trucks K models such as the K380, K430, K440, K460, K480, and K520 to ensure precise system integration.

Installation and maintenance

For workshop technicians and fleet managers, ensuring proper installation is vital for maintaining optimal engine performance. When replacing this unit, technicians should inspect the surrounding exhaust line and mounting hardware to prevent leaks. Proper maintenance of the pneumatic actuator and seals ensures long-term durability in demanding operating conditions.

System performance and selection

Consult your authorized distributor.

OE cross-reference

303.11.0057 (Exhaust Brake Valve) is the equivalent of the Renault Trucks OE number. This part directly replaces Renault Trucks OE number 7421707055.