Keep your RV slide-out room properly aligned and operating smoothly with the Lippert Components 375994 Infinite Pitch Arm Assembly. This 69-inch black arm is an OEM-quality replacement component for Lippert's Infinite slide-out systems, controlling the pitch and tilt of your slide room as it extends and retracts. If your slide room is racking, binding, dragging on the floor seal, or showing uneven gaps at the top or bottom, a worn or damaged pitch arm is a common culprit -- and this is the correct direct replacement.
The Lippert Infinite slide-out mechanism uses a pitch arm assembly to regulate the angle at which the slide room travels in and out of the coach. Unlike basic slide systems that rely purely on the slide-out tube rails, the Infinite system incorporates a pitch arm that actively manages the room's tilt, keeping the floor of the slide level with the coach floor and preventing the room from nosing down or cocking upward as it travels.
Over time, the pitch arm pivot points, mounting hardware, and the arm itself can suffer wear, corrosion, or physical damage -- especially in rigs that see rough road conditions or frequent slide cycling. Part number 375994 is the factory-correct replacement arm at the 69-inch length, finished in black, matching the geometry and mounting configuration required by the Infinite system.
At 69 inches, this arm matches the geometry of larger Lippert Infinite slide-out rooms where a full-length pitch arm is required for proper travel and alignment.
Factory-matched black powder-coat or anodized finish resists corrosion and blends with the undercarriage and slide-out hardware for a clean, OEM appearance.
Engineered specifically for Lippert's Infinite slide-out mechanism. Mounting points, pivot geometry, and arm profile match the original factory specification.
Drop-in replacement for the original 375994 pitch arm. No custom fabrication or modification required when replacing a like-for-like worn or damaged arm.
The pitch arm in a Lippert Infinite slide system connects between a fixed bracket on the coach chassis and a pivot point on the slide room frame. As the room extends, the arm rotates through its arc and holds the room at the correct pitch angle -- preventing the leading edge of the slide floor from dragging on the main floor, and keeping the top seal compressed evenly across the full width of the opening.
Common signs of a failing or damaged pitch arm include:
The Lippert Infinite slide-out system is widely used across major OEM manufacturers including Forest River, Coachmen, Keystone, CrossRoads, and others. If your coach has a Lippert-branded slide mechanism and your pitch arm is stamped or labeled "Infinite," part 375994 is the correct replacement arm at the 69-inch dimension. Verify your existing arm length before ordering -- Lippert offers pitch arms in multiple lengths for different room widths.
Before purchasing, confirm the following on your existing slide-out setup:
Replacing a pitch arm typically requires extending the slide room to access the mounting brackets, then supporting the room independently while the arm is unbolted from its pivot points. The room must remain safely supported throughout the swap. Lippert recommends verifying slide room alignment and re-lubricating all pivot points after replacing pitch arm components. Refer to Lippert's slide-out alignment procedure to confirm proper pitch after installation.
After installing a new pitch arm, cycle the slide room two to three times and inspect the floor seal gap along the full width of the opening. If the gap is uneven, the slide room may need minor pitch adjustment at the slide-out tube mounting brackets -- a common final step after any pitch arm replacement on Infinite systems.
When replacing the pitch arm, inspect the pivot bushings and mounting bolts at both the chassis bracket and the slide room bracket. These components wear at the same rate as the arm itself. Replacing worn bushings at the same time as the arm prevents a repeat service call and restores full pitch control precision.