Shop by Brand Yamaha OutboardGear Back Pinion, Gear Set 99999-04029-00 (25T) Viewer:86 OEM No.: 99999-04029-00 For Yamaha Outboard 75, 80, 90, 100 HP You May Also Be Interested In Gear 647-45570-00(27T) Reverse Gear 6F5-45570-00-00 / 6F5-45571-00-00 (24T) Lower Unit Gasket Kit 69G-W0001-20-00 Screw 10-806327/806327