Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6F5-11610-20/6F6-11610-20-0.50 Viewer:793 OEM No. : 6F5-11610-20/6F6-11610-20-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 6J8-11601-21-00 0.50 Piston Kit 61A-11631-02 STD Spacer 688-45997-00-00/688-45997-01-00 Piston Ring 12140-97J00-000 STD