Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 646-11631-01 STD Viewer:1281 OEM No. : 646-11631-01-STD For YAMAHA Outboard 2 HP You May Also Be Interested In Piston Ring 6S1-11603-00-00 STD Piston Pin 62T-11633-00-00 Casing, Lower 6F5-45312-00-4D/6F5-45312-01-4D Seal Labyrinth 63V-11515-02-00-F