Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 689-11631-00 STD Viewer:911 OEM No. : 689-11631-00-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 6L1-11642-11 STD Piston Ring 664-11610-00 STD Liner, Pump Case 3B2-65011-0/3B2650110M Brush Holder Assembly 67F-81840-00-00