The GDO 3.5 Ecoboost Timing Chain Kit With Vvt Cam Phaser undergoes rigorous testing to ensure your engine runs smoothly for years to come. Manufacturer Part Number: AT4Z6K297B f150 3.5 ecoboost timing kit Fitment Model/Year? Ford 2011-2013 F-150 3.7L DOHC 4VV6EFI 2011-2013 F-150 3.5L DOHC 4VTURBO 2011-2013 Flex 3.5L DOHC 4VTURBO 2011-2013 Taurus 3.5L DOHC 4VTurbo 2011-2013 Fusion 3.5L DOHC VCT Mercury 2011-2013 Milan 3.5L DOHC VCT Lincoln 2011-2013 Zephyr 3.5L DOHC VCT 2007-2010 MKX 3.5L DOHC VCT 2011-2013 MKZ 3.5L DOHC VCT Replace Part Number: AT4Z6L266B, AT4Z6K254A,AT4Z6K255A, AT4Z6B274A, AT4Z6K297A, AT4E6K297, AT4Z6K297B, 90738S, AT4Z6C525B, AT4Z-6C525-B, AT4Z6C525A, AT4Z6C525C, AT4Z6C525D, VV5056, VVT55, AT4Z6C525BB, AT4E6C525FK, AT4Z6C526B, AT4E6C524EC, AT4Z-6256-B, 95690, 95688, 95697, 95691, 95687, 95689, 95686, S995