FordPartsGiant.com offers the wholesale prices for genuine 2003 Lincoln Aviator parts. Parts like Air Vents, Ducts & Louvres - Rear are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 4.6L DOHC EFI. Transmission: 5-Speed Automatic Transmission 5R55S.