Description

The Cummins Piston Ring Set 3802258 (Standard Size) is an OEM-spec ring set engineered to restore proper compression sealing, oil control, and combustion efficiency in Cummins 6CT 8.3 diesel engines . This ring set is specifically designed for use with pistons identified by crown markings 3163, 8749, 9564, and 9928 , ensuring correct fitment and optimal engine performance. Piston ring compatibility is critical in Cummins 6CT 8.3 engines, where multiple piston designs are used across different applications. The 3802258 ring set is manufactured to OEM tolerances to match the groove dimensions and operating requirements of the listed piston numbers, helping maintain factory compression ratios and reduce blow-by. Constructed from high-strength, wear-resistant materials, these rings are designed to withstand high combustion pressures, continuous-duty operation, and elevated operating temperatures. Precision-machined profiles promote fast ring seating, uniform cylinder wall contact, and controlled oil consumption—key factors for long engine life and reliability. The Cummins 3802258 piston ring set is commonly installed during 6CT 8.3 engine rebuilds, in-frame overhauls, piston replacements, and professional remanufacturing projects . It is trusted by diesel technicians, fleet maintenance teams, and engine builders who require OEM-quality sealing performance. Compatibility & Fitment Engine Platform: Cummins 6CT 8.3 Compatible Piston Markings: 3163, 8749, 9564, 9928 Ring Set Part Number: 3802258 Size: Standard (STD)