This is an authentic part produced by original manufacturer. It is used in various garage access systems by Chamberlain and LiftMaster. This assembly includes two (2) roll pins and one (1) each of: spring washer, thrust washer, retaining ring, bearing plate, drive gear, worm gear, helical gear, and grease.

It is a genuine item that is supplied by the original equipment manufacturer for use with Chamberlain and LiftMaster garage door openers. This is an identical replacement for a missing or a damaged light socket that the bulb would connect to. Please make sure to refer to the appropriate diagrams of your specific model for the correct location and application of this component. Keep in mind this high-quality socket is made of durable materials and is sold individually.

This is an authentic LiftMaster replacement part that has been sourced from the original manufacturer to be used with garage door openers. The battery is used as a direct replacement of the battery that would have come with a new opener. This battery is used as a backup power source to allow the garage door to operate off the main power. This item is sold as an individual replacement part.