Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 664-11610-10 0.25 Viewer:683 OEM No. : 664-11610-10-0.25 For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 69L-11636-00 0.50 Piston Kit 670-11631-01 STD Gear 6E5-45560-00/6E5-45560-01-00(26T) Washer, Plate 90201-10M01-00