When your hydraulic slide-out cylinder is leaking, bent, or simply worn out, this OEM-spec replacement cylinder body from Lippert Components gets your slide room moving again without replacing the entire slide-out assembly. The 3728923 is a heavy-duty 8,000 lb capacity cylinder body designed for use in Lippert HydraSlide and Power Gear hydraulic slide-out systems commonly found in Class A motorhomes, fifth wheels, and large travel trailers. At a 2.00-inch bore and 15.00-inch stroke, this is a direct-replacement cylinder body for mid-range to full-extension hydraulic slide rooms.
Lippert Components is the dominant OEM supplier of hydraulic slide-out systems in the RV industry, and the 3728923 cylinder body is built to the same standards as the unit that came in your rig from the factory. This is the cylinder body only -- the core structural and pressure-containment component of the hydraulic jack assembly. It is machined to accept standard Lippert seals and end fittings, making it a practical rebuild or direct-swap option for service technicians and advanced DIYers.
The 2.00-inch bore diameter and 15.00-inch stroke length place this cylinder in the mid-travel range for Lippert slide-out applications. It is most commonly found on slide rooms in the 6-foot to 10-foot width range where full extension requires a longer stroke. The 8,000 lb working load capacity handles even fully furnished slide rooms with hardwood floors, theater seating, and kitchen islands.
Engineered for heavily loaded slide rooms. Handles theater seating, full kitchens, and hardwood flooring without straining the hydraulic circuit.
Honed to close tolerance for consistent seal contact. Compatible with standard Lippert replacement seal kits for the 2-inch bore family.
Provides the travel needed for mid-depth to full-extension slide rooms. Verify your existing cylinder stroke before ordering to confirm fitment.
Manufactured to Lippert HydraSlide and Power Gear specs. Eliminates guesswork on thread patterns, port locations, and end cap compatibility.
Lippert produces hydraulic slide-out cylinders in several bore sizes -- most commonly 1.50-inch, 1.75-inch, 2.00-inch, and 2.50-inch -- to match the load and travel requirements of different slide room configurations. The 2.00-inch bore is the workhorse of the lineup, used extensively in Class A gas and diesel motorhomes as well as heavy fifth wheels from manufacturers including Forest River, Coachmen, Heartland, Keystone, and Thor Motor Coach.
The 15.00-inch stroke (part 3728923) is one of the longer strokes in the 2-inch bore family. Shorter-stroke siblings include the 10-inch and 12-inch stroke variants. If you are unsure of your current stroke length, fully retract the slide room and measure from the face of the cylinder body to the fully retracted rod end -- that measurement is your stroke.
The 3728923 is designed for use within Lippert HydraSlide and legacy Power Gear hydraulic slide-out systems. These systems use a dedicated hydraulic pump (typically 12V DC), a fluid reservoir, directional control valves, and hydraulic lines connecting to the slide cylinder(s). This cylinder body accepts standard SAE O-ring boss (ORB) or straight-thread hydraulic fittings at the port locations, consistent with Lippert hydraulic plumbing practice.
This is NOT compatible with electric-over-hydraulic Schwintek in-wall slide systems or rack-and-pinion electric slide systems. It is specifically for dedicated hydraulic cylinder-type slide-out mechanisms where a physical cylinder rod pushes and pulls the slide room.
Replacing a hydraulic slide cylinder body is an intermediate-to-advanced service task. The slide room must be fully supported independently before the cylinder is disconnected -- never rely on hydraulic pressure to hold a slide room while working underneath or behind it. Hydraulic lines must be capped immediately upon disconnection to prevent fluid loss and contamination.