Automatic Transmission Oil Cooler Line Connector (800-613) by Dorman®. Location: Transmission Side. Inlet and Outlet. With White Retainer. Quantity: 1 Piece. Dorman’s Auto Trans Oil Cooler Line Connectors are constructed from high-quality materials to provide a leak-free connection between transmission lines or between the radiator and the transmission. Replacement restores the radiator to proper operation.