Safe-T-Plus RV Steering Stabilizer Mounting Kit (Model: F-143K3) F-143K3 Mount - Fits: Freightliner XC Chassis with a Tie Rod Diameter of 1-3/4in RV Steering Stabilizer - Reduces road wandering, over-steering, and driver fatigue caused by side winds, passing semi-trucks, crowned roads, bad roads, and rut tracking. Limited lifetime vehicle warranty RV Steering Control - Helps improve RV driving safety in the event of front tire blowouts, road shoulder drop off, passing traffic, potholes, pavement drops, and other bad road conditions Truck Steering Stabilizer - Helps protect the safety of the vehicle and drivers while reducing maintenance costs and tire wear. Safe-T-Plus units available for all Class 1 - 8 trucks Please refer to the Safe-T-Plus Fit Guide document to determine the correct steering stabilizer and mounting kit for your specific vehicle. Steering stabilizer unit not included