Description

Coolant Bypass Hose for the engine cooling system of the 200 TDi diesel engine.

It carries coolant along the bypass path so that flow continues to circulate around the engine while the thermostat is closed, allowing the engine to warm evenly before the main radiator circuit opens. The hose is secured at each end with a worm-drive clamp.

Rubber coolant hoses harden and perish with age and heat; renewal during cooling-system service helps prevent leaks and overheating.