When your RV slide-out stops moving -- or moves slowly and grinds -- the motor assembly is usually the culprit. This Lippert 383745 double shaft motor assembly is a direct OEM-grade replacement for Power Gear part 523983, engineered specifically for above-floor rack-and-pinion slide-out systems. Drop it in, wire it up, and get your slide room working again without dealer markup or custom fabrication.
Lippert's Power Gear above-floor slide-out systems are among the most common rack-and-pinion setups in travel trailers, fifth wheels, and Class A motorhomes built over the past two decades. When the motor fails, a direct replacement like the 383745 is far more cost-effective than replacing the entire slide-out mechanism or paying a shop to source a non-spec substitute.
This assembly uses a double-shaft motor configuration, meaning the motor drives output from both ends of the shaft. That dual-shaft design is essential to the synchronization gearbox used in Power Gear above-floor systems -- a single-shaft motor will not work as a substitute. Make sure your existing system uses part 523983 before ordering.
Designed to replace Power Gear part 523983 with no bracket modifications, no wiring adapter, and no drilling required.
Dual output shafts drive both sides of the slide synchronization gearbox simultaneously -- critical for above-floor rack systems.
Runs directly off your RV house battery system. No inverter or converter needed for normal slide-out operation.
Backed by a limited 2-year manufacturer warranty through NBK Parts, covering defects in materials and workmanship.
The 383745 is a direct replacement for Power Gear part number 523983, which was used as the primary drive motor in Lippert's above-floor slide-out systems. This system type uses a gearbox mounted beneath or alongside the slide room floor, connected to rack-and-pinion rails. The motor bolts to the gearbox and must match the dual-shaft interface exactly.
This part is also catalogued as NBK Parts 20535 -- you may see it listed under either number depending on your supplier. Both refer to the same assembly.
Replacing this motor is a straightforward job for anyone comfortable with basic RV maintenance. The motor typically mounts to the slide gearbox with four bolts and connects to the vehicle wiring harness via a two-wire DC connection (power and ground). No special programming or calibration is required after installation.