The factory V6 hitch is rated 500/5000lbs capacity but is not to be used with a WD hitch. The weak point is the fact that it is only bolted to the cross member which is structural and can twist.
Most trailers that can be comfortably towed with the V6 will fall under the 500/5000lbs ratings. If you need or want a WD hitch, the V8 hitch is frame mounted and rated to the max of its tow capacity of 720/7200lbs. You may be able to find a used one at a wrecker Lexus model fits too) or Curt makes a nice aftermarket one. See
here. The only downside to the Curt is it's only rated at 550/5500lbs with a WD hitch.
It's an easy bolt on in about 15 minutes. I've done 2, first got bent in a rear end accident but it saved my 4Runner from any damage. Hardest part is getting the stock one off without removing the bumper cover.
'17 Ram 2500 Crewcab Laramie CTD
'13 Keystone Bullet Premier 310BHPR
Hitched by Hensley