【REPLACEMENT】The original door lock cylinders and ignition switch that come on your vehicle experience motor wear over time, and that excessive wear will causes them to sticking and fail. These F150 switch cylinder tumbler are the exact OEM design to replace your defective key cylinder. 【PREMIUM QUALITY】The Ford ignition cylinder has undergone a rigorous test to ensure high quality and better durability, one pair chrome door locks, strict quality control to ensure your vehicle's locks and keys will be working like new. 【DECLARATION】This door lock cylinders and ignition switch does NOT includ the transponder (Chip) keys, the supplied keys will need to be duplicate to transponder chipped keys and programmed to your car by local automotive locksmith or the dealer. LC6177 + DL5885 X2 + 597638(No chip) 【REPLACEMENT FOR】2000-2005 Ford Excursion, 1998-2005 Expedition, 2001-2007 Ford Explorer,1998-2007 F-250, 1997-2007 F-350, 2004-2007 Freestar, 1999-2003 Windstar, 2002 Lincoln Blackwood, 1998-2005 Navigator. Please compare the pictures carefully and double check the details. The details of the car's parts are very different due to different years. 【12-MONTH WARRANTY】 If for any reason at all, you are not fully satisfied with the F-350 ignition switch lock set, you can contact us through amazon message for carefree REPLACEMENT or REFUND.