Maximize your excavator's performance with the OTTO High Quality Piston Ring Set (P/N: 1 -12121151-0), a premium aftermarket replacement designed for durability and precise fitment. Thishigh-quality component restores reliable engine performance to your heavy equipment, offering acost-effective alternative to OEM parts.

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.