Pinion Gear Assembly – 55 HP | YM.663818321100

Pinion Gear Assembly – 55 HP
Part No.: YM.663818321100

The Pinion Gear Assembly is a precision-engineered drivetrain component designed to transfer power efficiently within the outboard engine gearcase. Manufactured to Yamaha OEM specifications from high-strength, heat-treated steel, it delivers smooth gear engagement, reliable torque transmission, and long-lasting durability under demanding marine operating conditions. Precision-machined for accurate fitment, it ensures dependable performance and efficient operation of the propulsion system.

Part Number: YM.663818321100
Brand: Yamaha
Type: Pinion Gear Assembly
Application: Marine Outboard Engine Gearcase and Transmission System

Suitable for: Yamaha 55 HP outboard engines using OEM part number 663-81832-11-00. Commonly used in selected Yamaha 55 HP outboard gearcase assemblies. Always verify compatibility with your specific engine model and serial number before installation.