Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 679-11631-00 STD Viewer:777 OEM No. : 679-11631-00-STD For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6H3-11636-01 0.50 Piston Kit 61N-11636-00 0.50 Oil Seal 345-01215-0/345012150M Piston Ring 12140-94301-050 0.50