The Genie 21033A Trac Drive Inner Slide is an authentic Genie replacement component used inside the rail of Genie Trac Drive garage door openers. This inner slide forms part of the opener’s trolley/carriage assembly, engaging with the drive system to move the door by linking the opener to the door arm. Replacing a worn or damaged inner slide restores proper travel, reduces chatter or skipping in the rail, and helps ensure consistent opening and closing performance. It is intended for select Genie Trac Drive systems; confirm compatibility by matching part number 21033A to your opener’s parts diagram or service manual.
Installation typically involves disconnecting power to the opener, pulling the emergency release, detaching the door arm, and sliding the new inner slide into the rail per the opener’s service instructions, then resetting travel limits and force settings after reassembly. For safety, do not service the opener if springs, cables, or other door hardware are damaged; consult a trained technician when needed. Use only genuine Genie components and follow the manufacturer’s lubrication and maintenance guidelines to maintain reliable operation of residential Genie Trac Drive openers. Common search terms include Genie 21033A, Trac Drive Inner Slide, trolley inner slide, carriage inner slide, and OEM Genie garage door opener replacement part.