This is an authentic item that is designed for use with Chamberlain chain drive garage access systems. It is an important part of the mechanism that helps to secure the door. It is an identical replacement for a damaged or a missing component that was installed on a new unit. Refer to the owner's manual and the parts diagrams for your model to ensure the correct repair procedure. Keep in mind this high-quality item includes the door bracket, the clevis pin, and the fastener.

It is a genuine OEM sourced component which is made for use with Chamberlain and LiftMaster garage doors. This is one of the sections of the arms that support and guide the door. It provides an identical replacement for a missing or a damaged part that was included with a new unit. To ensure the correct repair procedure, check the owner's manual for your model. Note, this high-quality straight door arm section is sold individually.

This part is available as an individual replacement. The chain spreader attaches to the gear and sprocket assembly and helps to prevent the chain from coming off. It will need to be replaced if it becomes broken and may require a screwdriver during the installation process. This is a genuine Chamberlain replacement part that is sourced from the original manufacturer for use with chain drive garage access systems.

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.

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.