FordPartsGiant.com offers the wholesale prices for genuine 2015 Lincoln Navigator parts. Parts like Rear Doors, Hinges & Weatherstrips are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.5L GTDI, 8 Cyl 5.4L. Transmission: 4-Speed Automatic Transmission E4OD(4R100), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission ZF 6HP26 Steptronic.