Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-20 0.50 Viewer:902 OEM No. : 6H4-11601-20-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Pin 6G0-11633-00 Piston Ring 6E5-11610-20 0.50 Key, Woodruff 09420-05005 Gear 57521-94402