Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-20-00 0.50 Viewer:971 OEM No. : 6H4-11610-20-00-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston 6L2-11636-00-00 0.50 Piston Ring 61X-11604-00-00 0.25 Carburetor Assembly 67D-14301-11-00 Bearing 93310-624U5-00