Category OMC Back O-Ring 311338 OMC Sterndrive Parts & Accessories Viewer:324 Item No: 311338 Similar fits No: OMC - 0311337 / 0777861 Sierra - 18-7105 Mallory - 9-76506 GLM - 80180 You May Also Be Interested In Cover to Housing Gasket 333348 Carburetor to Manifold Gasket 327707 Top End Gasket Kit HS-710162D Gasket 420950840