Keep your Lippert slide-out moving smoothly with this direct-replacement 18-tooth spur gear. Designed specifically for older Lippert rack-and-pinion slide-out systems, this gear restores proper engagement and operation when a worn or damaged gear is causing binding, grinding, or failure to extend or retract.
Slide-out gear wear is one of the most common causes of a room that hesitates, grinds, or stops mid-travel. The Lippert 122739 spur gear is the correct factory-spec replacement for Lippert rack-and-pinion slide-out systems produced before October 2013 using the 123356 or 122837 system assemblies. Using the exact tooth count, pressure angle, and dimensions ensures proper mesh with the rack gear and prevents accelerated wear on adjacent components.
This gear is sold individually. If your slide-out has multiple drive points or both sides show wear, check whether you need to order more than one unit before starting the repair.
18 teeth with a 14.5-degree pressure angle -- matching the original factory gear geometry for smooth, reliable rack engagement.
Confirmed fit for Lippert slide-out systems 123356 and 122837 manufactured prior to October 2013. Not intended for post-October 2013 builds.
0.620" x 1.667" x 0.750" -- sized to drop into the existing gearbox housing without modification when replacing a worn original gear.
Lippert part number 122739, also listed under vendor part 71-3832. Order with confidence knowing you have the correct component.
Spur gears in rack-and-pinion slide-out systems wear gradually, often accelerated by inadequate lubrication, debris on the rack, or operating with a misaligned or overloaded room. Signs that the spur gear needs replacement include:
Replacing the spur gear typically requires removing the slide-out motor and gearbox assembly. The gear is press-fit or keyed onto the drive shaft depending on the specific system configuration. Verify your system matches the 123356 or 122837 assembly before ordering.