The LiftMaster K001C8103-1 Antenna is an OEM replacement antenna designed to restore and optimize remote-control reception on compatible LiftMaster operators and external radio receivers. Commonly used on commercial door operators, gate operators, and accessory receivers, this passive antenna connects to the receiver’s antenna port via its lead and is intended to be mounted upright for best range. It helps improve signal reliability in everyday applications where the factory antenna has been damaged, misplaced, or delivers reduced performance due to enclosure placement.
No programming is required when replacing an antenna; pairing and codes in the receiver remain unchanged. For proper operation, the antenna must match the operating frequency of the connected LiftMaster system; LiftMaster systems in North America typically operate at 310, 315, or 390 MHz, so always confirm the frequency specified for your operator or receiver and verify that it calls for part number K001C8103-1. Install the antenna vertically, keep it clear of metal obstructions, and route the lead away from high-voltage wiring to minimize interference. Disconnect power before service and follow LiftMaster and UL 325 instructions for safe installation. This OEM part is suitable as a replacement or upgrade for compatible residential and commercial applications that explicitly list K001C8103-1 in the parts documentation.