Description

The Cummins Thick Wall Long Cylinder Liner 3802407 is a heavy-duty, precision-machined cylinder liner designed specifically for Cummins engine block 3802408 . This thick-wall, long-style liner is engineered to restore proper cylinder bore geometry, compression sealing, and piston stability during diesel engine rebuilds. With an overall length of 9.33 inches and a 5.152-inch flange diameter , this liner provides enhanced structural strength compared to thin-wall options. Thick wall liners are commonly selected for applications requiring maximum durability, improved wear resistance, and long service life , especially in high-load or high-hour Cummins diesel engines. Manufactured from high-grade alloy cast iron , the Cummins 3802407 cylinder liner delivers excellent heat dissipation, superior surface finish, and resistance to scoring and cavitation. Proper liner fitment is critical for controlling oil consumption, reducing blow-by, and protecting pistons and piston rings from premature wear. This thick-wall long liner is widely used during Cummins diesel engine overhauls, in-frame rebuilds, and block reconditioning projects , making it a dependable solution for professional engine builders and fleet maintenance operations.