The Genie 33355A.S Worm Gear is a genuine OEM replacement part for select Genie Chain Glide garage door openers. This worm gear sits on the motor shaft inside the gearcase and drives the mated gear set that turns the output sprocket for the chain rail. When worn or stripped, the opener motor may run but the chain and door will not move, making this component a common service item for restoring proper lift performance. Use it as a direct replacement to maintain smooth, reliable operation on compatible Genie ChainGlide systems in residential applications. Buyers often search for Genie worm gear, ChainGlide worm gear, Genie OEM part 33355A.S, and garage door opener replacement gear when servicing these models.
Installation typically involves disconnecting power, releasing chain tension, opening the gearcase, swapping the worm gear, applying manufacturer-approved lubricant, and retensioning the chain. After reassembly, follow Genie’s instructions to check travel limits and safety reversal/force settings. For correct fitment, verify your opener’s model and parts diagram to confirm it specifies 33355A.S. Always work with the door disengaged from the opener and ensure the door is balanced before testing. This factory part helps return compatible Genie Chain Glide openers to dependable, quiet operation without the need to replace the entire drive unit.