Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-10 0.25 Viewer:840 OEM No. : 6H4-11601-10-0.25 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Ring 647-11610-20 0.50 Piston Kit 6H4-11635-01 0.25 Outer Plate, Cartridge 63V-44323-00-00 Bushing, Ratchet 345-05135-0/345051350M/345-05135-1/345051351M