Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 676-11635-60 0.25 Viewer:868 OEM No. : 676-11635-60-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 689-11610-20-00/689-11610-21-00 0.50 Piston Kit 6H4-11631-09 STD Piston Pin 663-11633-00-00 Gasket, Plate to Crankcase 331917/0331917