FordPartsGiant.com offers the wholesale prices for genuine 2006 Mercury Montego 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 3.0L DOHC EFI Modular. Transmission: 6-Speed Automatic Transaxle - AWF21, CVT Select Shift Transmission.