The LiftMaster 12A373 Capacitor Bracket is a genuine OEM replacement part engineered to secure the motor start/run capacitor inside compatible LiftMaster garage door openers. By holding the capacitor firmly in place, this bracket helps reduce vibration, prevents wire fatigue, and maintains the proper orientation of the component for reliable opener performance. It is ideal as a replacement for a damaged or missing bracket and is commonly used in AC-motor LiftMaster systems that utilize a separate capacitor can.
Use this replacement bracket when servicing or rebuilding a LiftMaster operator to restore factory fit and dependable mounting of the capacitor. Installation should be performed with power disconnected and after safely discharging the capacitor; mount the bracket in the designated location using the opener’s existing attachment points, and route wiring to avoid abrasion and pinch points. Compatibility is model-specific rather than universal—verify the 12A373 part number against your opener’s parts diagram or service manual to ensure a proper match for residential or light commercial applications.