The LiftMaster K29-10338 MOTOR CAPACITOR is a genuine OEM replacement component designed for select LiftMaster operators that use a single-phase AC induction motor. This capacitor supports proper motor starting torque and smooth acceleration, helping resolve issues such as humming, stalling, or failure to start in compatible garage door openers or gate operators. Using the exact part number ensures the correct electrical characteristics and connector style for the unit, making it a reliable replacement part for residential or commercial applications where the original capacitor has degraded or failed.
For installation, disconnect power to the operator, verify the part number on the service label or in the operator manual, and match the microfarad (µF) and voltage ratings printed on the existing component to K29-10338. The capacitor connects via quick-disconnect terminals; take a photo of the wiring before removal and discharge the old capacitor safely per standard electrical practice. Use only on models that specifically call for LiftMaster K29-10338 to maintain performance and safety compliance. If uncertain, check the official LiftMaster parts list or the model-specific technical documentation to confirm compatibility with your opener or gate system.