Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 689-11635-00 0.25 Viewer:897 OEM No. : 689-11635-00-0.25 For YAMAHA Outboard 30 HP You May Also Be Interested In Piston Kit 682-11631-00 STD Piston Kit 6J8-11636-02-00 0.50 Oil Seal 09283-25075-000 Gasket 27-80366310/80366310