Shop by Brand Yamaha OutboardFlywheel Back Flywheel 66T-85550-10-00 Viewer:304 OEM No.: 66T-85550-10-00 / 66T-85550-00-00 For Yamaha outboard 40 HP You May Also Be Interested In Flywheel 66T-85550-10-00 Flywheel 688-85550-13-00 Gasket, Cylinder Head 329836/0329836 Gear, Forward 688-45560-00-00(26T)