Caterpillar
Cylinder liner for Caterpillar 3208
This cylinder liner 4F6486 is designed for use in the Caterpillar 3208 engine. It acts as the internal sleeve for the piston assembly within the engine block.
Compatible models
Specifications
- Part number
- 4F6486
- Brand
- Caterpillar
The cylinder liner serves as the internal sleeve for the Caterpillar 3208 engine block, providing a controlled surface for the piston and its rings to travel. It is installed into the engine block to protect the surrounding metal from the mechanical friction of the piston movement and the thermal stresses of the combustion process. By maintaining a precise internal diameter, this component helps ensure the piston rings maintain a proper seal against the cylinder wall to preserve engine compression.
This part is compatible with the Caterpillar 3208 engine, which is utilized across various heavy machinery applications. The actual manufacturer for this component is Caterpillar. The liner facilitates heat transfer from the combustion chamber to the engine coolant system, which is necessary for maintaining operating temperatures during use. Proper installation of the liner is a standard procedure during engine overhauls to restore the internal geometry of the cylinder bores.
In internal combustion engines, cylinder liners provide a replaceable wear surface that prevents the engine block from sustaining direct damage. They are designed to withstand the cyclic pressures of the combustion cycle while supporting the lubrication film required for piston ring operation.

