LiftMaster Q027 / 343X965 Motor Capacitor — 65µF

The LiftMaster Q027 supplier listing identifies a 65µF motor capacitor under supplier part reference 343X965. LiftMaster service documentation also uses Q027 with the K29C-65AU2415 capacitor reference in documented legacy gate-operator assemblies. Confirm the offered replacement against the motor and original capacitor label before ordering. Capacitance alone does not establish fit: voltage rating, capacitor type, terminals and mounting must also be correct. This is an electrical service component, not a universal remedy for a motor that hums or fails to start.

Compatibility — Models, Versions and Exclusions

Match the Complete Capacitor Specification

A replacement must match the motor’s approved capacitor requirements. The 65µF figure describes capacitance, not voltage capability, terminal arrangement or physical fit. Have the technician photograph the original label and verify the applicable service reference. Do not select a different value to change motor performance or accept a lower voltage rating simply because the can fits the bracket.

A motor that hums, stalls or trips protection needs diagnosis before a capacitor is ordered. Supply problems, a failed motor or a binding mechanical drive can produce similar symptoms. The technician should assess the electrical and mechanical condition together. Replacing the capacitor without correcting the original fault can leave the operator unreliable and may damage replacement parts.

Specifications and Product Identification

Before Ordering

• Record the motor label, operator model and complete original capacitor markings.
• Confirm 65µF and all other required ratings for the exact motor.
• Check terminal and mounting details against the supplied replacement.
• Have the motor circuit and mechanical drive evaluated before replacement.

Package Contents and Separate Requirements

This listing identifies the capacitor offered as Q027 / 343X965. A motor, mounting bracket, wiring harness or complete electrical repair kit is not promised as included. Confirm the current part label and carton before ordering. The related K29C-65AU2415 service reference is useful for identification, but it should not replace checking the actual offered component and motor requirements.

Safety Warnings — Read Before Installation or Service

• WARNING: A capacitor can retain a dangerous electrical charge after power is disconnected. Replacement requires a qualified technician using the manufacturer’s safe discharge and verification procedure.
• Isolate all applicable power before service. Do not touch terminals or assume the component is safe merely because the operator is switched off.
• Do not improvise a discharge by shorting terminals with a tool, and do not install a capacitor with unverified ratings.
• Restore electrical covers and test the repaired operator and all required safety functions before normal use.

Related Products and Important Differences

• 030B0532-1 residential motor capacitor — a different 56µF part shown for comparison, not an alternative for this 65µF application.
• LMRRUL monitored photo eye — a separate protection accessory only for approved gate controls; it has no role in motor-capacitor replacement.

Frequently Asked Questions

Does any 65µF capacitor work?

No. Voltage rating, type, terminals, mounting and the approved motor application must also match.

Is Q027 the same as the residential 030B0532-1?

No. That store listing identifies a different 56µF component. It is not an interchangeable replacement.

Can I handle it safely as soon as power is off?

Do not assume so. Stored charge can remain; a qualified technician must discharge and verify it using the appropriate procedure.

Will it repair every humming motor?

No. The supply, motor and mechanical drive require diagnosis before a capacitor replacement is justified.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.