1、Applicable Model: Starter motor is fit for 4 stroke 9.9HP 15HP F9.9 F15 outboard motor, please confirm whether your model is applicable before buying. 2、OE Number: The part numbers for reference are 66M 81800 00, 66M 81800 01, 66M 81800 02, please confirm whether it is consistent with the OE you need. 3、Enhanced Performance: This outboard starter motor is built in premium magnetic coil, ensuring greater torsion and faster engine startups every time. 4、Durable Construction: Sealed bearings and housing prevent moisture and dirt from entering, with excellent Marine environment resistance and rust resistance, ensuring maximum durability. 5、Direct Replace: Made with robust metal alloy, professional manufacturing, this outboard starter motor can be used to refurbish and replace the old and failed starter.