As long as the total weight of the trailer and it's cargo are no more than 60,000-lbs then you can use the Curt Pintle Hook, Bolt-On, 60K # C48231 to connect the truck to the trailer. It sounds like you've got a 40,000-lbs capacity trailer, so this should work just fine.
I've linked a short review video of this pintle hitch for you to have a look at, as well. view full answer...
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