489.07.0003 Renault Trucks Injector Sleeve

What does an injector sleeve do?

This injector sleeve serves as a specialized dry housing tube fitted directly into the cylinder head of heavy-duty diesel engines. Its primary role is to isolate the injector from coolant passages, preventing direct contact with liquid while maintaining the correct axis and fixed depth. By conducting heat from the injector to the coolant, it also acts as an essential thermal bridge within the combustion system.

Compatibility with Renault Trucks

This component is specifically designed for use in Renault Trucks engines. It ensures that the injector remains properly seated despite the intense combustion recoil and thermal expansion occurring during every engine cycle. This precise fitment is vital for maintaining the integrity of the seal between the combustion chamber and the water jacket.

Installation and maintenance

For workshop technicians, it is important to inspect this sleeve during any injector or cylinder head maintenance. Because it maintains the seal between the combustion chamber and the water jacket, any misalignment or wear can lead to coolant contamination or loss of compression. When performing engine service, ensure all sealing surfaces are clean to allow for correct seating.

System integrity

Selecting a high-strength component ensures long-term stability in demanding heavy commercial vehicle environments. Proper installation prevents shifting or leaking under high pressure. Check the compatibility list.

OE cross-reference

489.07.0003 (Cylinder Head Injector Sleeve) is the equivalent of the Renault Trucks OE number. This part directly replaces Renault Trucks OE number 5010295301.