489.03.0002 Volvo Compatible Injector Sleeve

What does an injector sleeve do?

This injector sleeve is a critical dry housing tube fitted into the cylinder head that separates the injector from the coolant passages in heavy-duty diesel engines. It maintains the injector on its correct axis and at a fixed depth, while providing a vital seal between the combustion chamber and the water jacket. By conducting heat from the injector to the coolant, it also acts as a thermal bridge to prevent overheating.

Compatible engines and vehicles

This component is designed for use in various Volvo engine families, including D11, D12, D13, and D16 series found in models such as FH, FM, FMX, and VNL. It is also compatible with Mack Granite and Pinnacle engines like MP7 and MP8, as well as Renault Trucks engines including the DXi series. The sleeve ensures precise fitment across these heavy commercial vehicle applications.

Installation and maintenance

During maintenance or injector replacement, it is recommended to inspect the sleeve and its sealing elements for wear. Proper installation is essential to maintain the seal between the combustion chamber and the water jacket. Ensuring the sleeve is seated correctly prevents leaks and maintains optimal combustion performance in high-pressure diesel systems.

Troubleshooting guidance

Consult your authorized distributor.

OE cross-reference

489.03.0002 (Cylinder Head Injector Sleeve) is the equivalent of the Volvo OE numbers. This part directly replaces Volvo OE numbers 1546718, 276811, 85104133.