1、Part Number: Starter motor replace part number are 688 81800 10, 688 81800 11, 688 81800 12, for API Marine: MOT5015, for Arco Marine: 3427, for Hitachi: S114 263B, for Sierra Marine: 18 6423, etc. 2、Strong Compatibility: Boat motor is fit for 90ETL 1984‑1990, fit for 90ETLJD 1987‑1990, fit for 90ETX 1984, fit for 90TJR 1991‑2001, fit for 90TLR 1991‑2008, fit for B90TLR 1998‑1999, etc. 3、High Performance: Starter motor has a built in excellent magnetic coil that provide greater torsion and fast start, sensitive performance perfectly suited to your usage needs. 4、Strong Sealing: Sealed bearings and housings keep out moisture and dirt, provide excellent resistance to the marine environment and rust, and offer long lasting durability. 5、Perfect Replacement: Designed to replace old and damaged motors, and to restart your engine in a short period of time, solving problems such as slow starting and abnormal starting.