Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 664-11610-10 0.25 Viewer:671 OEM No. : 664-11610-10-0.25 For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Ring 61N-11604-00-00 0.25 Piston Kit 6H3-11631-09 STD Cap Lower Casing 682-45361-01-EJ Spring, Starter 6F5-15713-00/6F5-15713-01