Yamaha - Nut Castle - 90171-16002-00 MerCruiser Seal Kits for Gear Housing Fan- User adjustable settings

Fan- User adjustable settings

Black face plate

predictable corrosion control

It flows quickly at startup

There’s a calm that settles in when your temperatures stay right where they should — not climbing during long runs

Yamaha - Nut Castle - 90171-16002-00 MerCruiser Seal Kits for Gear Housing Fan- User adjustable settingsYamaha Nut Castle 90171 16002 00 Made from the highest quality materials to last for years to come, Guaranteed to meet the highest standards of quality and durability, Designed to withstand the toughest abuse, Genuine OEM Yamaha part, Special Order Item. 90171 16002 00 NUT, CASTLE WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information