Lippert 1621 HD 18,000 lb fifth wheel pin box. I replaced this with a cushioned pin box and it has been used to tow our new camper less than 300 miles. I'm guessing at the weight rating based on the bolt pattern. Pick up only. It's minimum 15,500 lbs. If it's listed it's available. https://www.etrailer.com/5th-Wheel-Pin-Box/Lippert/LC1191151.html