Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 644-11631-03 STD Viewer:1422 OEM No. : 644-11631-03-STD For YAMAHA Outboard 3.5, 5 HP You May Also Be Interested In Piston Kit 6D0-11631-00 STD Piston Kit 64D-11636-00 0.50 Coil Ignition 3G2-06040-2/3G2060402M/3G2-06040-1/3G2060401M Bearing 93306-207U0-00