Dorman 924-703 Ignition Lock Cylinder KEEP YOUR KEYS: By automatically coding the cylinder to the vehicle owners existing keys, this innovative solution allows the owner to keep their keys. SIMPLE INSTALLATION: By eliminating the work needed to fully disassemble and manually code the cylinder, this makes repairing and replacing an ignition lock easy enough that anyone can do it. SAVES TIME: Typically, replacing an ignition lock cylinder requires a tedious, manual coding process. Dorman solved that problem by creating a tool that automatically matches the new cylinder to your existing key. Simply insert the key into the tool, turn twice, and then insert the newly coded cylinder into the ignition lock cylinder housing. PATENT-PENDING: This exclusive design revolutionizes the process of replacing and recoding an ignition lock cylinder. Original Equipment (OE) Number: 5003843AA, 5003843AB, 5083915AB