ITEM NAME:Outboard Motor Clutch Dog 664-45631-02 for YAMAHA Outboard 2-stroke 30HP Description: Part number 664-45631-02. OMC Clutch Dog Shifter. Fitment for Yamaha 2-stroke 30HP outboard engines. New OEM Repalcement part. Material:Metal Size:35x45mm/1.38x1.78'' Package Includes: 1 Piece Outboard Clutch Note: Please check the OMC part number for your fitment needs..1 Piece Outboard Clutch. OMC Clutch Dog Shifter.