Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-10 0.25 Viewer:841 OEM No. : 6H4-11601-10-0.25 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 6R5-11631-11 STD Piston Kit 646-11631-01 STD Gasket, Cylinder Head 6F5-11181-A1-00 Gasket, Exhaust Cover 318925/0318925