Category OMC Back Screw 331979 OMC Sterndrive Parts & Accessories Viewer:648 Item No: 331979 Similar fits No: OMC - 0331979 / 0777860 Sierra - 18-3133 Mallory - 9-48218 GLM - 22323 You May Also Be Interested In Gasket 338282 Prop Shaft Seal 330137 Thermostat Kit 982554 Washer, Crank 8A7-11685-00