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B503 replacement parts

This model number is discontinued. Available replacement parts are listed below.

Replacement Parts

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Installation & Support

info California Residents: Proposition 65 WARNING
Non-battery backup openers are not available for sale or installation in California on or after July 1, 2019 per SB-969.

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.

In Control. From anywhere

Close your garage door from anywhere. Open it for anyone. Get alerts. Explore myQ today.