Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-10-00 0.25 Viewer:1037 OEM No. : 6H4-11610-10-00-0.25 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 6L1-11631-01 STD Piston Ring 6E5-11610-10 0.25 Bearing 377139/0377139 Gasket, Oil Seal Housing 664-15369-00-00/664-15369-A0-00