Description

The Cummins 6CT 8.3 Thin-Wall Liner Kit —covering part numbers 3802088, 3802370, and 3907792 —is an OEM-spec cylinder liner solution designed for thin-wall sleeve configurations used in select 6CT 8.3 diesel engine blocks . Manufactured to precise factory tolerances, these liners restore correct bore geometry, compression sealing, and long-term durability in Cummins engines . Thin-wall liners are engineered to fit specific block castings where standard or thick-wall liners are not applicable. Proper liner selection is critical— liner options vary by block casting and engine configuration —to ensure correct interference fit, heat transfer, and piston-to-wall clearance. Installing the correct thin-wall sleeve helps prevent liner movement, coolant intrusion, and premature wear. Each liner in this kit is produced from high-strength alloy iron with precision honing to support fast ring seating, stable oil control, and reduced friction. When paired with the correct pistons and ring sets, these liners help restore factory compression ratios and reliable combustion performance during rebuilds. The 6CT 8.3 thin-wall liner kit is commonly installed during engine overhauls, in-frame rebuilds, block reconditioning, and professional remanufacturing projects . It is trusted by diesel technicians and engine builders who require OEM-level accuracy and durability. Part Numbers & Application Notes Thin-Wall Liner Part Numbers: 3802088, 3802370, 3907792 Engine Platform: Cummins 6CT 8.3 Type: Thin-wall cylinder sleeves Fitment Note: Options vary by block casting —verify block requirements before ordering.