The Lippert 239505 is a 6-inch main body slide-out component designed for front-mount, no-sweep rack-and-pinion slide-out systems. This is an OEM-grade replacement part for Lippert slide-out mechanisms found on a wide range of travel trailers, fifth wheels, and Class A motorhomes. When your slide-out system fails due to a damaged or worn main body housing, replacing with the correct Lippert component restores smooth, reliable room extension and retraction.
Lippert's rack-and-pinion slide-out systems are among the most widely used in the RV industry. The main body is the core structural and mechanical housing of the slide-out drive assembly -- it houses the motor interface, the rack gear track, and the mounting interface that connects the mechanism to the RV's floor or wall structure. Getting the right main body is critical: the tube diameter (6 inches here), the mount style (front mount), and the sweep configuration (no sweep in this case) must all match your existing system exactly.
The "no sweep" designation means this main body does not include a curved or swept gear rack section. This is a straight-run design, appropriate for slide-out rooms that travel on a linear path without a floor-sweep arc. Installing a sweep body in place of a no-sweep unit (or vice versa) will cause binding, misalignment, and potential damage to the slide room or drive motor.
Designed specifically for Lippert rack-and-pinion assemblies using the 6-inch main body tube size. Verify your existing tube diameter before ordering.
Front mount style attaches the drive mechanism to the front face of the slide-out room structure. Confirm your current mount style matches before ordering.
Straight-track configuration for linear slide-out travel. Not compatible with installations that require a swept rack for floor-clearance arc.
Sourced directly from Lippert Components -- the same manufacturer as original equipment on hundreds of RV brands including Forest River, Keystone, Coachmen, and more.
Lippert slide-out main bodies are specified by three key variables: tube diameter, mount position, and sweep type. Ordering the wrong combination is the most common installation mistake. Here is what each designation means:
Lippert rack-and-pinion slide systems are installed by most major RV manufacturers. This main body component is applicable to slide-out systems on:
Replacing the main body typically requires partial disassembly of the slide-out drive mechanism. The slide room must be fully retracted or supported externally before beginning. The motor assembly mounts to the main body; the rack inserts through the tube and engages the pinion gear inside the body. Proper lubrication of the rack and pinion with a manufacturer-approved grease is recommended at reassembly.