Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 670-11631-01 STD Viewer:924 OEM No. : 670-11631-01-STD For YAMAHA Outboard 50, 60, 75, 85 HP You May Also Be Interested In Piston Kit 6H4-11631-09 STD Piston Kit 6J8-11636-02-00 0.50 Gasket, Air Cleaner 6G5-14416-00-00 Gasket, Water Pump 3F0-65018-0/3F0650180M