41A2817 41C4220A Garage Door Opener Drive worm Gear kit for Sears Liftmaster
16 aug 2017
Easy installation and works great
Seems to be made of the same materials as the original, and so far works great. Excellent value and quick shipping. Arrived the earliest day in the range of possible shipping dates, which is very good considering it was shipped from Asia.
Connected it, and worked first time and consistently.
Does what it's supposed to do. New firmware also operates a bit differently, in that draft motor runs at high speed for a bit on shut down, guess to clear the exhaust pipe of fumes so they don't potentially fall back into the furnace. At least furnace lights up and works, while original one seemed like it often had to go through a couple of relight cycles to stay on and maintain the burner.