Genuine Ford Parts AGSF-42F-M (SP 486)Spark Plug Genuine Ford OE parts are the only replacement parts warranted by Ford Motor Company They meet stringent requirements for fit, finish, structural integrity, and corrosion protection If you are leasing, check your lease agreement, using Genuine Ford OE Parts may be a requirement Designed and produced to the same specifications and tolerances as the parts on the vehicle when it was manufactured Using Genuine Ford OE Parts for repairs keeps your vehicle running like new and can help maintain its value