Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 676-11610-20 0.50 Viewer:846 OEM No. : 676-11610-20-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 66T-11636-00 0.50 Piston Pin 6K7-11633-00-00 Zinc Anode 822157C2-ZN-MA Piston Ring 6G0-11610-00 STD