FordPartsGiant.com offers the wholesale prices for genuine 2015 Lincoln MKX parts. Parts like Cylinder Head are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.0L EcoBoost (240PS) , 6 Cyl 3.5L DOHC VCT SMPI, 6 Cyl 3.7L DOHC. Transmission: 6-Speed Automatic Transmission 6F Mid-Range, 6-Speed Automatic Transmission 6F50.