Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 676-11610-20 0.50 Viewer:851 OEM No. : 676-11610-20-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 664-11610-10 0.25 Piston Kit 676-11636-00 0.50 Throttle Cable Assembly 63610-96311-000 Oil Seal 93101-09M42-00