Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 670-11631-01 STD Viewer:946 OEM No. : 670-11631-01-STD For YAMAHA Outboard 50, 60, 75, 85 HP You May Also Be Interested In Piston Ring 6K5-11601-22-00 0.50 Piston Ring 6E5-11610-20 0.50 Piston Kit 688-11636-03 0.50 Slide, Shift 663-45634-00-00