Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-20-00 0.50 Viewer:970 OEM No. : 6H4-11610-20-00-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 676-11635-00 0.25 Piston Kit 6G5-11642-00 STD Gasket, Float Chamber 13251-98100-000 Insert Cartridge 646-44322-00-00