FordPartsGiant.com offers the wholesale prices for genuine 2006 Mercury Milan 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: 4 Cyl 2.3L, 6 Cyl 3.0L DOHC EFI. Transmission: 5-Speed Automatic Transmission Mazda FNR5, 5-Speed Manual Transmission (G5M), 6-Speed Automatic Transaxle - AWF21.