Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 676-11610-20 0.50 Viewer:828 OEM No. : 676-11610-20-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6H3-11635-01 0.25 Piston Ring 6H4-11610-20-00 0.50 Gasket, Reed Box 335633/0335633 Lower Unit Gasket Kit 682-W0001-21/682-W0001-C1