Replacement Cylinder Sleeve - 4.000 Bore

The MELLING Replacement Cylinder Sleeve CSL236HP is a precision-engineered engine block component designed for 4.000-inch bore applications. This cylinder sleeve serves as a critical wear surface in high-performance and rebuilding scenarios where the original bore has been damaged, worn beyond specification, or requires resizing. Built from durable cast iron with a 0.125-inch wall thickness, this universal-fit sleeve provides a reliable solution for engine machine shops, rebuilders, and performance technicians who demand exact dimensional tolerances and long-term reliability.

Cast iron construction provides superior thermal conductivity and wear resistance compared to alternative materials, critical when managing peak combustion pressures and maintaining piston-to-wall clearance over extended engine operation. The 0.125-inch wall thickness represents the industry standard for replacement sleeves, balancing structural strength against material cost and installation accessibility. Proper honing to final piston clearance specifications and correct installation torque are essential for optimal performance and longevity.

This replacement sleeve addresses common rebuild scenarios: restoring engine blocks with damaged original bores, enlarging existing bores to accommodate oversized pistons, and correcting bore concentricity issues. The CSL236HP is designed for compatibility with standard block casting configurations, making it an essential component for any engine rebuilding project. Performance technicians will appreciate the reliability and precision that this sleeve offers in high-demand applications.