Yamaha - Gear - 66T-45571-00-00 Mercury-90HP-EFI-2005 This product has been superseded

This product has been superseded by 990C0-00510-22P - 4B 15

It’s a simple bit of insurance that keeps your performance strong

Certified marine technicians performing routine or complex repairs

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Yamaha - Gear - 66T-45571-00-00 Mercury-90HP-EFI-2005 This product has been supersededYamaha Gear Lower Unit Gear Component 66T 45571 00 00 Overview The gear is a vital component within the Yamaha outboard lower unit, designed to transfer and manage engine power through the drivetrain. It works in coordination with other gears to ensure smooth operation, proper torque distribution, and efficient propulsion. Built to OEM specifications, this gear delivers precise engagement, durability, and reliable performance in demanding marine