Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 676-11635-00 0.25 Viewer:970 OEM No. : 676-11635-00-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 676-11610-10 0.25 Piston Kit 696-11631-00 STD Oil Seal 09282-24003-000 Gasket 656-45113-00/656-45113-A0