Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 679-11631-00 STD Viewer:776 OEM No. : 679-11631-00-STD For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6R5-11645-01 0.25 Piston Kit 61N-11635-00 0.25 Fuel Filter Strainer 65W-24251-10-00 Float 648-14385-00-00/648-14385-01-00