The Tecumseh 16090017 Piston Assembly is a genuine OEM replacement part designed for various Tecumseh OHV series engines. This complete assembly includes the piston, piston pin, piston rings, and retaining clips, ensuring a comprehensive repair or overhaul. It features a standard bore of 87.3 mm (3.437 inches) and is a direct replacement for original part numbers 16090001 and 16090010. This assembly is crucial for maintaining engine compression and performance in compatible models such as OHV110, OHV120, OHV125, OHV130, OHV135, OHV140, OHV150, OHV155, OHV160, OHV170, OHV175, OHV180, OV358EA, OV490EA, and TVT691.