Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-20 0.50 Viewer:924 OEM No. : 6H4-11601-20-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 6H1-11636-03 0.50 Piston Kit 688-11635-03 0.25 Piston Ring 39-817869A3/817869A 3 0.030 Gasket, Manifold 6E5-41134-A0-00