Description

The Cummins Cylinder Liner 3802403 is a precision-machined diesel engine cylinder sleeve designed to restore proper cylinder geometry, compression sealing, and long-term engine durability in Cummins diesel engines. This liner is a critical component during engine rebuilds, overhauls, and repairs where cylinder wear, scoring, or damage requires liner replacement. Manufactured from high-grade alloy cast iron , the 3802403 cylinder liner is engineered to withstand high combustion pressures, extreme operating temperatures, and continuous heavy-duty service . The finely finished inner bore promotes proper piston ring seating, reduced friction, and controlled oil retention, which are essential for efficient combustion and long service life. Designed for accurate fitment and correct liner protrusion , this Cummins cylinder liner helps maintain proper compression ratios and prevents coolant or oil contamination when installed correctly. Using new liners during an engine rebuild is critical to restoring factory-level performance and preventing premature engine failure. This cylinder liner is commonly used in Cummins diesel engine rebuild and overhaul applications , including on-highway trucks, industrial engines, and heavy-duty equipment where OEM-grade internal engine components are required.