8550
Battery Backup DC Belt Drive Garage Door Opener - Discontinued
8550 replacement parts
This model number is discontinued. Available replacement parts are listed below.
Parts Diagram
Replacement Parts
Replacement Parts
Need help?
Browse installation guides, product manuals, FAQs, videos and tutorials, or ask us a question. Click here.
Time to upgrade?
Shop our latest garage door openers and choose from the best in smart home and security features. Click here.
Find a Dealer
Get the peace of mind that only comes with working with a LiftMaster qualified dealer. Click here.
Installation & Support
Installation & Support
architect documents
keyboard_arrow_upsell sheets
keyboard_arrow_upmanual
keyboard_arrow_upgeneral documents
keyboard_arrow_upinfo California Residents: Proposition 65 WARNING
Need help?
Browse installation guides, product manuals, FAQs, videos and tutorials, or ask us a question. Click here.
Time to upgrade?
Shop our latest garage door openers and choose from the best in smart home and security features. Click here.
Find a Dealer
Get the peace of mind that only comes with working with a LiftMaster qualified dealer. Click here.