This OTTO piston ring (part number 471-0275) is engineered for CAT C9.3 excavator engines. It ensures effective cylinder sealing, optimal compression retention, and controlled oil consumption, contributing to smooth engine performance and enhanced durability under heavy-duty operating conditions.

This genuine OEM piston ring set is designed for direct replacement in Komatsu ZX200-3, ZX330-3, PC200, and PC330 excavator engines equipped with 4HK1 or 6HK1 engines.