On the Lippert High-Speed Power Stabilizer Jack 337199 it would appear that the only parts of the legs that are replaceable are the Electric Stabilizer Jack Support Arm # LC1134122 and the Foot Assembly # LC157584.
If the black arms are buckled then the entire jack assembly will need to be replaced. Since the 337199 is no longer available you will need the Lippert High-Speed Power Stabilizer Jack # LC369774. view full answer...