This 1999 Ford Mustang door and window lock system represents reliable OEM-quality security for your classic pony car. Engineered to Ford's original specifications, this lock mechanism ensures smooth operation of both door entry and window controls while maintaining the authentic feel that Mustang enthusiasts demand. Whether you're restoring a weekend cruiser or maintaining a daily driver, this lock assembly delivers the peace of mind that comes with proper security and hassle-free access. The durable construction stands up to years of use while preserving that satisfying click of a well-built American muscle car door. Don't let a faulty lock compromise your Mustang's functionality or your enjoyment behind the wheel – restore your car's security and convenience with this quality replacement part that keeps your '99 Mustang running as Ford intended.