Keep your RV slide-out operating smoothly with this genuine Lippert replacement key block. Designed specifically for single and dual rail above floor slide-out systems, this small but critical component helps maintain proper rail alignment and engagement -- preventing slop, binding, or misalignment in everyday slide operation.
The Lippert 124366 key block is a direct OEM replacement part used in Lippert's single rail and dual rail above floor slide-out systems -- one of the most common slide-out designs found across a wide range of RV brands. These slide-out systems are installed by many manufacturers including Forest River, Keystone, Jayco, and others who sourced Lippert slide mechanisms from the factory.
The key block interfaces with the slide-out rail to provide positive engagement and controlled movement. When a key block wears out, cracks, or goes missing, the slide can develop excessive play, uneven travel, or fail to retract and extend correctly. Replacing it with the correct OEM part restores proper function without the need to replace the full rail assembly.
Genuine Lippert part number 124366, engineered to exact factory specifications for single and dual rail above floor slide-out systems.
Weighs just 0.05 lbs -- a compact, low-profile part that installs quickly as a direct replacement without modification.
Standard black color matching factory-installed hardware for a clean, consistent appearance inside the slide-out rail assembly.
Replacing a worn or damaged key block is a straightforward fix that can restore slide-out performance without replacing the entire mechanism.
The key block is a wear item in rail-based slide-out systems. Over time, friction, load cycles, and exposure to road vibration can cause cracking or deformation. A damaged key block may cause the slide to feel loose, bind during travel, or fail to lock into position. Replacing this part early prevents more expensive rail or motor damage downstream.
This key block is compatible with Lippert above floor slide-out systems using single rail and dual rail configurations. Above floor systems have the rail mechanism mounted on top of the RV floor -- as opposed to under floor designs where the mechanism is below the subfloor. If you are unsure which system your RV uses, check the Lippert label on the slide-out mechanism or consult your RV's build sheet using the VIN.
Lippert produces several slide-out system families including rack and pinion, hydraulic, and electric motor-driven rail systems. The 124366 key block is specific to the single/dual rail above floor electric slide-out design. Confirm your system type before ordering to ensure correct fitment. Mixing parts between system families will result in improper fit.