489.03.0008 Volvo Compatible Injector Sleeve

A cylinder head injector sleeve is a dry housing tube fitted into the cylinder head that separates the injector from the coolant passages in diesel engines. This component keeps the injector on the correct axis and at a fixed depth while maintaining the critical seal between the combustion chamber and the water jacket. By conducting heat from the injector to the coolant, it also acts as a vital thermal bridge during operation.

This injector sleeve is compatible with several Volvo engine families, including those found in Volvo F10, F12, F7, FL10, FL12, N10, N12, NL10, NL12, B10B, B10M, and B12 trucks. It is specifically suited for engines such as the TD100, TD101, TD102, TD120, TD121, TD122, TD70, TD71, TD103, D10A, TD123, D12A and others. This ensures precise fitment for a wide range of heavy-duty commercial vehicle applications.

For workshop technicians performing engine maintenance or injector replacements, it is critical to inspect these sleeves for signs of thermal wear or erosion. When replacing an injector or performing cylinder head service, these sleeves are often renewed to prevent coolant leakage into the combustion chamber. Ensure all surfaces are clean to maintain a proper seal during installation.

Consult your authorized distributor to check the compatibility list.

OE cross-reference

489.03.0008 (Cylinder Head Injector Sleeve) is the equivalent of the Volvo OE numbers. This part directly replaces Volvo OE numbers 273822, 2738227.