Description

The Cummins Piston Ring Set 3802258 (Standard Size) is an OEM-spec ring set engineered to restore compression sealing, oil control, and combustion efficiency in Cummins diesel engines . This ring set is specifically designed for pistons identified by crown markings 3163, 7707, 9161, and 9247 , ensuring correct fitment and reliable performance during rebuilds. Correct piston ring selection is critical in Cummins 8.3-liter platforms, where multiple piston designs share similar dimensions but require precise ring compatibility. The 3802258 ring set is manufactured to factory tolerances to match the ring grooves and operating conditions of the listed piston markings, helping maintain proper compression ratios and combustion geometry. Constructed from high-strength, wear-resistant materials, these rings are built to withstand high cylinder pressures, elevated operating temperatures, and continuous-duty service . Precision-machined profiles promote fast ring seating, uniform cylinder wall contact, reduced blow-by, and controlled oil consumption—key factors for long engine life and dependable performance. The Cummins 3802258 piston ring set is commonly installed during engine rebuilds, in-frame overhauls, piston replacements, and professional remanufacturing projects . It is trusted by diesel technicians and engine builders who require OEM-level sealing performance and durability. Compatibility & Fitment Ring Set Part Number: 3802258 Size: Standard (STD) Compatible Piston Markings: 3163, 7707, 9161, 9247 Common Engine Platforms: Cummins 6CT / 6CTA 8.3 (verify application)