Fitment: Ignition lock assembly compatible with Ford F450, E150, E250, E350, Explorer, Expedition, Windstar, and Econoline models; compatible with Lincoln Mark LT, Navigator, and Town Car. Part Number: Ignition lock cylinder switch with 2 keys, replacement for part numbers 1521990A, 7C3Z-1521990-A, 7C3Z1521990A, and 7C3Z1521990. Please verify your vehicle model and the product image before ordering. Reliable Performance: This lock cylinder set is constructed from high-quality materials to ensure durability, compression resistance, and long-term wear resistance. Timely Replacement: The ignition lock cylinder switch plays a critical role in vehicle starting and ignition system control. Replacing worn, damaged, or outdated lock cylinders helps prevent malfunctions such as failure to lock/unlock doors or rotate the key smoothly, enhancing overall vehicle safety. Slight variations in appearance may occur between production batches, but functionality remains unaffected. Color: Silver Material: Plastic + Aluminum Package Contents: 1 x Door Lock Cylinder Kit Note: Other accessories shown in images are not included. Please note that screen settings and lighting conditions may cause slight color variation between the product image and the actual item. Measurement tolerance is ±1–3 cm.