Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6H4-11635-09 0.25 Viewer:452 OEM No. : 6H4-11635-09-0.25 Similar Number: YAMAHA No: 6H4-11635-00 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Ring 676-11610-00 STD Piston Ring 689-11610-10/689-11610-11 0.25 Piston Ring 435218/0435218 STD Fuel Pipe Complete 6Y1-24306-53-00