1、Applicable Model: Propeller shaft oil seal is replacement for 8 9.9 15 20 HP outboard, please confirm whether your model is applicable before buying. 2、OE Number: The part number of prop shaft oil seals for reference is 9301 17054 00, please confirm whether it is consistent with the OE you need. 3、Efficient Seal: Oil seal prevents water and other impurities from entering the bearing shaft, prevents the leakage of lubricating oil, and protects critical components from damage. 4、Metal Structure: Oil seal set is made of durable metal material, resistant to wear and corrosion, which can effectively prevent water and oil from penetrating each other. 5、Precise fit: The oil seal is precisely designed to fit perfectly into your outboard engine, ensuring easy installation and a perfect fit with other components.