Direct Replacement: If the door on the vehicle cannot be locked or unlocked, it may be due to a defective door lock kit. It will be very inconvenientIt is recommended that you replace it in time. This door lock kit meets or exceeds OEM standards and has been factory tested and is fully compatible with the original car. The mechanical part of the product contains lubricating oil to maintain good lubrication,can be installed directly High Quality: Using enhanced high-quality materials, wear resistance, impact resistance, and long service life. Cables made of high-carbon steel materials are additionally coated with zinc coating to prevent rust. The attached yellow door fixing clip can help you better fix the kit. The actuator with built-in high-quality motor and wear-resistant gear can ensure long-term stable operation. Undoubtedly this is a set of door lock precision kits worthy of your choice. Fits For: 1999-2007 Ford F250 F350 F450 F550 Super Duty OE#: 6C3Z-28264A01-A ; 6C3Z28264A01A ; 6C3Z-28264A00-A ; 6C3Z28264A00A Compatible With 1999-2007 Ford F250 Super Duty 1999-2007 Ford F350 Super Duty 1999-2007 Ford F450 Super Duty 1999-2007 Ford F550 Super Duty Note: Please check the part number before buying to make sure it fits your car