1、Fitment: Fit for Parsun 75 85HP 90HP 2‑Stroke Outboard Motor; Fit for C55ELRT C55TLRT C75TLRT C85TLRT E48MLHT E75MLHT; Fit for C75TLRU C85TLRU E75MLHU P75TLHU. 2、OE Number: Piston's reference part numbers are 688‑11631‑00, 688 11631 A0, 688‑11631‑03; Piston ring's reference part numbers are 688‑11603‑00, 688 11603 A0, 688‑11603‑03. 3、High Performance: The outboard motor piston ring kit is designed to deliver high performance, ensuring optimal and efficient operation of the motor. 4、Superior Durability: Made from durable steel alloy materials, the piston is built to withstand the demanding conditions of marine environments. 5、Direct Replacement: This piston ring kit includes piston, rings, wrist pin, and clips, is a direct replacement for your outboard motor.