489.03.0006 Volvo Compatible Injector Sleeve

What does an injector sleeve do?

This cylinder head injector sleeve acts as a critical dry housing tube fitted into the cylinder head to separate the injector from coolant passages. In heavy-duty diesel engines, it maintains the injector on its correct axis and at a fixed depth while acting as a thermal bridge to conduct heat from the injector to the coolant jacket. This component is vital for preventing leaks between the combustion chamber and the engine's cooling system.

Compatible Volvo engines and models

This part is specifically designed for use in Volvo heavy commercial vehicle engines, including models such as the F10, F12, FL10, and FL12. It is also suitable for various engine families like the TD70, TD122, D10A, and D12A found in Volvo N10, N12, NL10, NL12, B10B, B10M, and B12 trucks. These high-strength components ensure reliable performance across diverse Volvo engine configurations.

Installation and maintenance guidance

When performing engine maintenance or injector replacement, technicians should inspect the sleeve for signs of thermal fatigue or erosion. Proper installation requires ensuring the sleeve is seated correctly to maintain the seal between the combustion chamber and the water jacket. It is highly recommended to renew the sealing elements during any cylinder head service to prevent coolant contamination.

Selection and service advice

Consult your authorized distributor to ensure exact fitment for your specific engine series.

OE cross-reference

489.03.0006 (Cylinder Head Injector Sleeve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 270575.