Genuine Lippert Klauber F-300 replacement drive motor for 2×2 and 2.5×2.5 Electric Through-Frame slide-out systems. 3/4" drive shaft. 12V DC. Also replaces the Venture M-9800 motor. Verify tube size and motor label before ordering. Always reference your installation manual for compatibility.
The Lippert 321395 is the genuine Klauber F-300 replacement drive motor for LCI Electric Through-Frame slide-out systems built around 2×2 inch and 2.5×2.5 inch slide tube assemblies. The Through-Frame system is a rack-and-pinion design where the motor drives a driveshaft that runs through the slide-out frame tubes, turning the pinion gears that engage the rack to extend and retract the room. The F-300 motor provides the rotational force that drives this driveshaft through the 3/4" drive coupling.
The 321395 is the correct replacement when your system currently uses the Klauber F-300 motor — confirmed from the motor label on your existing unit. It also replaces the Venture M-9800 motor that was used in earlier generations of the same 2×2 and 2.5×2.5 Through-Frame system. The motor connects to the driveshaft via the 3/4" drive coupling, making drive shaft size — not just motor model — a critical confirmation before ordering.
As with all Lippert Through-Frame slide-out motors, always reference your installation manual and confirm compatibility from the motor label before purchasing. Motor assemblies vary based on year and slide-out type, and the wrong motor will not interface correctly with the driveshaft coupling.
3/4" drive coupling interfaces with the Through-Frame driveshaft — matches the original F-300 motor specification for correct power transfer
Built for LCI Electric Through-Frame systems — the motor drives a driveshaft through the 2×2 or 2.5×2.5 slide tubes to actuate rack-and-pinion gears
Runs from the RV's 12-volt house battery system — two-wire design connects to the existing slide-out controller wiring
The 321395 is the current Lippert replacement for older Venture M-9800 motors in 2×2 and 2.5×2.5 Through-Frame systems
Understanding the Through-Frame system helps identify motor vs. other component failures: Frame-within-a-frame, rack-and-pinion design: The slide-out room rides on an inner frame that slides inside the outer frame. Unlike the Venture Actuator (which uses a ball screw), the Through-Frame system drives the room with rack gears — one rack attached to each side of the inner frame, engaged by pinion gears at each corner. Driveshaft connects the motor to the pinion gears: The F-300 motor does not directly engage the rack. Instead, it drives a driveshaft that runs through the slide-out frame tubes (the 2×2 or 2.5×2.5 square tubes) from the motor position to the corners where the pinion gears are located. All four corners turn simultaneously from a single motor through this driveshaft system. 3/4" drive coupling: The motor connects to the driveshaft via a 3/4" drive coupling. This coupling size must match between motor and driveshaft — the 321395 uses a 3/4" drive, which is consistent with 2×2 and 2.5×2.5 tube systems. 2×2 vs. 2.5×2.5 tube size: The slide tube cross-section measurement (2×2 or 2.5×2.5 inches) determines which motor, driveshaft, and gear pack components are compatible. These measurements refer to the square cross-section of the slide-out frame tubes — visible by measuring the tube with a tape measure.
Three things must match your existing system before ordering the 321395: 1. Slide tube size: The 321395 fits 2×2 and 2.5×2.5 inch Electric Through-Frame systems only. It does NOT fit 2×3 or 3×3 tube systems (those require different motors such as the F-350 or D-300). Measure the square cross-section of your slide-out frame tubes to confirm. 2. Motor label: The motor label on your existing unit will identify it as an F-300, Klauber F-300, or Venture M-9800. If your existing motor is labeled differently — F-350, D-300, A-300, M-500, or another designation — the 321395 is not the correct replacement. 3. Drive shaft coupling size: Confirm the driveshaft coupling diameter on your system matches the 3/4" drive specification of the 321395. If the coupling is a different size, the motor will not engage the driveshaft properly. Motor assemblies vary by year and slide-out type — Lippert specifically states this. Always reference your RV's installation manual or contact Lippert with your VIN before ordering to confirm the 321395 is the correct motor for your specific slide-out year and configuration.
Tools Needed: Socket set (including 5/16" for motor bolts), wrenches, basic hand tools Key Installation Steps: 1. Retract the slide-out fully and disconnect the negative battery terminal before beginning 2. Locate the motor on the Through-Frame slide-out assembly — typically mounted at the center of the slide-out frame, connecting to the driveshaft that runs through the square tubes 3. Disconnect the two motor wires from the existing wiring connection — note wire colors and polarity 4. Remove the failed motor from the driveshaft coupling and the mounting bracket — typically secured with four 5/16" bolts 5. Install the 321395 — engage the 3/4" drive coupling onto the driveshaft and mount to the bracket with the same four mounting bolts 6. Reconnect the two wires in the same polarity as the original 7. Reconnect the negative battery terminal and test slide-out operation in both directions 8. Verify even room travel — the room should extend and retract squarely with no racking or binding. If the room is out of square, refer to the Through-Frame service manual for room adjustment procedures.
Included: • 321395 Klauber F-300 motor assembly • Mounting hardware NOT Included — May Need Separately: • 281331 — Standard gear pack for 2×2 Through-Frame systems (if rack or pinion gears are also worn) • Driveshaft / driveshaft coupling (if coupling is damaged alongside the motor) • Slide-out controller (if electrical fault is upstream of the motor) • J-rollers (if room binding is caused by worn rollers rather than motor failure) Related Klauber Motor Options: • 143701 — Klauber F-350 Motor (for 2×2, 2.5×2.5, and 2×3 Through-Frame systems) • 138449 — Klauber D-300 Motor, 3/4" drive (for 3×3 Through-Frame systems) • 157511 — Klauber A-300 Motor (for through-frame and above-frame systems) • 132682 / 295380 — Venture actuator motors (for Venture Actuator Through-Frame systems — NOT the same as Klauber F-300 systems)
Lippert Customer Care: Phone: 1-574-537-8900 Website: support.lci1.com To confirm compatibility: Lippert specifically advises that motor assemblies vary by year and slide-out type. Always reference your installation manual before purchasing, or contact Lippert with your RV's VIN number to confirm the correct motor for your specific Through-Frame system year and configuration. Service Manual: Lippert's Electric Through-Frame Slide-Out Service Manual is available at lci1.com/customerservice and covers motor removal, driveshaft service, gear pack replacement, room adjustment, and troubleshooting. California Prop 65: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. See P65Warnings.ca.gov.
Per Lippert's Electric Through-Frame Slide-Out Service Manual, over 90% of electrical no-movement failures trace to low battery voltage or poor ground connections — not a failed motor. Always verify battery voltage at the motor leads under load and inspect the chassis ground wire before committing to motor replacement.
All Klauber Through-Frame motors use a similar physical form factor and 3/4" drive coupling, but they are calibrated for specific tube sizes and torque requirements. Never substitute a different Klauber model based on physical fit alone — always verify the motor designation from the label on your existing motor and the slide tube size before ordering. Contact Lippert at support.lci1.com or 1-574-537-8900 with your VIN for definitive confirmation.