LiftMaster 041A4885-4 Belt Drive Gear and Sprocket Kit If you have a 8550WL

If you have a 8550WL

Check the manual and for your specific garage door opener model before ordering to ensure compatibility

Also known as 41A5585‑1

Original 7-foot rails had 13 mount pieces

For use with various LiftMaster® and Chamberlain AC Belt Drive Garage Door Openers

LiftMaster 041A4885-4 Belt Drive Gear and Sprocket Kit If you have a 8550WLLiftMaster 041A4885 4 is a replacement Belt Drive Gear and Sprocket Kit. For use with various LiftMaster Belt Drive Garage Door Openers. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Also known as 41A4885 4 Genuine LiftMaster replacement part. If you have a 14 cog pulley this is the correct part. If your pulley has 9 cogs use part number 041A4885 2