Inlet Fuel Line Connector (800-153) by Dorman®. Package Quantity: 1 Piece. Fitting Attachment End 1: Male O-ring – M16-1.5. Gasket Material: Viton. Now you can replace a damaged connector without spending time or money on the entire fuel line. But that’s not the only advantage. Highly resistant to the extreme temperatures that lead to cracking, Dorman’s Fuel Line Connectors prevent leaks from forming.