I can certainly help you out with finding replacement parts for your Lippert Electric Landing Gear Set - Weld On - 37" Lift - 6,000 lbs # LC333964. The correct replacement motor for this setup is Lippert Venture 5th Wheel RV Landing Gear Motor # LC142178. This motor is rated for 5,000lbs on single motor 2 leg setup, and 8,000lbs on dual motor setup.
If you end up needing a replacement lead leg then you can go with Lippert Components 32" Lead Leg # LC179013, and for a replacement follow... view full answer...
You are correct that Curt does manufacture the Mopar factory 5th wheel hitches, so you can use either the # C16722 (12" diameter) or the # 16721 (10" factory lube plate) as a replacement. These are both 3/16" thick so they'll be suitable for almost any 5th wheel hitch, including your Mopar hitch. You'll want to measure the hitch's skid plate to determine which size will give you the most coverage. view full answer...