Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 679-11635-00 0.25 Viewer:855 OEM No. : 679-11635-00-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6E7-11635-00-00 0.25 Piston Kit 6L1-11642-01 STD Oil Seal 309-00121-0/309001210M Cable Remote Control 701-48320-60-00