Keep your hydraulic slide room operating reliably with the Lippert 127246 Quad Hydraulic Slide-Out Room IRC Assembly. Designed as a direct OEM-spec replacement for Lippert quad hydraulic slide systems, this IRC (Integrated Room Control) assembly is the core electro-hydraulic interface that manages extend and retract functions for quad-configuration slide-out rooms found on a wide range of towable and motorized RVs.
Lippert hydraulic slide-out systems are among the most common found in mid-to-large RVs, and the IRC assembly is a critical component. The IRC serves as the control and distribution interface between the hydraulic power unit and the slide-out room cylinders, managing fluid routing, limit signaling, and room positioning for quad-cylinder slide configurations.
When an IRC assembly fails -- whether from fluid contamination, electrical fault, or mechanical wear -- the entire slide room can become unresponsive or behave erratically. Replacing with Lippert part 127246 restores factory operation without requiring full system modifications or custom fabrication.
Engineered specifically for Lippert slide rooms using four hydraulic cylinders, ensuring correct fluid distribution and balanced room travel.
Combines room control logic and hydraulic interface in one assembly, simplifying diagnosis and replacement versus multi-component repairs.
Lippert part number 127246 ensures correct connector pinouts, mounting geometry, and hydraulic port sizing for factory-spec installation.
Used across a wide range of Lippert-equipped fifth wheels, travel trailers, and Class A motorhomes with quad hydraulic slide rooms.
IRC stands for Integrated Room Control. In Lippert hydraulic slide systems, the IRC assembly is the electro-hydraulic module that interfaces with the coach wiring harness and the hydraulic power unit to command slide-room movement. It monitors position signals, controls valve sequencing, and protects the system from over-travel. On quad configurations, it manages all four cylinders simultaneously to prevent racking or uneven extension.
The IRC is distinct from the hydraulic pump motor, the cylinders themselves, and the slide room topper or seal components. If your slide room moves partially then stops, moves unevenly, or does not respond to wall switch or remote commands, the IRC assembly is a primary diagnostic suspect alongside the pump relay and room wiring harness.
Generic hydraulic control modules may share a similar form factor but often differ in connector pinouts, valve sequencing logic, and pressure thresholds. Using Lippert OEM part 127246 ensures the replacement matches the original electrical interface and hydraulic calibration, reducing post-install troubleshooting time.
This assembly is specifically for quad hydraulic slide rooms -- those using four hydraulic cylinders. Lippert also produces dual and single hydraulic slide configurations, as well as electric (rack-and-pinion and cable) slide systems. Those require different IRC assemblies or room control modules. Verify your slide type and existing IRC part number before purchasing.
IRC assembly replacement is a moderate-difficulty procedure best suited to RV technicians or experienced DIYers comfortable working with 12V electrical systems and hydraulic components. The general process involves:
After IRC replacement, inspect the hydraulic fluid level and condition. Contaminated or low fluid is a common root cause of IRC failure. Use only Lippert-approved or compatible hydraulic fluid (typically AW32 or Dextron III as specified for your system) and top off to the correct level before testing operation.
While servicing the IRC, also inspect the hydraulic pump motor, solenoid valves, room wiring harness, and slide cylinder seals. A failing pump or leaking cylinder can cause symptoms identical to IRC failure and may cause premature failure of a new IRC assembly if not addressed first.