CURT X5 Gooseneck-to-5th-Wheel Adapter Plate #16310

UPC: 612314163106

Where To Buy

MSRP $592.02

  • Converts competitive gooseneck hitches to 5th wheel rails
  • For use with CURT and competitive 5th wheels up to 20,000 lbs.
  • Square shank for use with gooseneck hitches with square ball hole
  • Industry-standard base rails accept 5th wheel hitches and rollers
  • Protected by a highly durable carbide powder coat finish
  • Co-cured in a rust-resistant liquid Bonderite coating
  • Made in USA


  • Not compatible with shallow-hole gooseneck hitches
  • Capacity limited to lowest-rated towing component
Instruction Sheet Download pdf
Shipping Weight 105.650
Side Application Type Description Blank
Mount Type Description Blank
Warranty One Year Limited
Finish Blank
Part Type 5th Wheel Adapter Plate
UPC 612314163106
Gross Trailer Weight(GTW) 20,000 LB

Additional Information

Whoever said your pickup truck could not do it all was wrong. CURT is your go-to source for towing products, and as such, we provide the equipment you need to make the most out of your tow vehicle. Whether you have a set of 5th wheel rails bolted to your truck bed or an under-bed gooseneck hitch installed, you do not have to settle for only one type of towing.

CURT 5th wheel adapter plates are a fast, dependable way to convert your gooseneck trailer hitch into a set of 5th wheel rails to accept a 5th wheel hitch. With gooseneck installation brackets and a gooseneck hitch already installed, the adapter plate simply inserts into the gooseneck trailer ball hole using a solid shank and is secured with the locking mechanism provided by the gooseneck hitch. One of the most attractive features about CURT 5th wheel adapter plates is that they are practically instantaneous: insert the shank, apply the locking mechanism and just like that you have a sturdy pair of 5th wheel rails.

This CURT 5th wheel adapter plate features a square shank and is compatible with gooseneck hitches with a square shank removable ball. It features a gross trailer weight capacity of 20,000 lbs., allowing it to accept a number of 5th wheel hitches, including the CURT A16, Q20 and E16, as well as many competitive models. This 5th wheel adapter plate offers a simple pin-and-clip installation for 5th wheel hitches and has multiple mounting points to accept either 5th wheel legs or a 5th wheel roller. To give you and your truck the advantage in heavy-duty towing, trust CURT to provide the answer you need in every towing situation.


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Update X5 install issues

Used adapter 1 season with no pulling slop between 5th wheel hitch and adapter. Great product. Just a pain to install and remove with factory sprayed liner.

Used for several years

I've had the CurtX5 for over 3 years and this hitch performed well for us for the most part. We've moved on to something new but thought I'd put this review in. 1. We have a spray in bed liner and had no issues because whoever installed the BW hitch must have installed after the bed liner because it was flush with the liner, but above the bottom of the truck. 2. The rubber pads on the bottom edges didn't last one trip. But I figured this was cosmetic and didn't really care. I thought about adding something to take up the slack though. 3. The plate should be tight. In my situation it really didn't go down far enough to make it sit flat on the bed of the truck. There was some play when you lifted one side or the other. In retrospect I should have added a firm rubber piece on the bottom of the rails to help take up the slack. 4. Do not jerk or bounce your truck while using this. Not really recommended to use with Sliding hitches though you CAN, just be careful. We ended up denting the bed of the truck a little moving the slide when the slide got stuck once. This added a tremendous amount of weight on one side of the rail and it bent the bottom of the truck. I was able to fix the slider so it stopped doing this but it was too late for the truck bed. I highly recommend only using a slider that functions really well and doesn't ever jam. So other than issues we caused ourselves, this adapter worked GREAT. It is VERY heavy (heavier than it looks!) so be prepared to have help if you aren't muscular. Over the years I got to where I could put it in by myself without pulling something. :) Overall a great device if used properly!

X5 install issues

The X5 is great idea but a pain in the --- to install. I installed this adapter in a B&W Turn over ball Gooseneck # GNRK1384 on a 2014 Ram 2500 with factory sprayed bed liner. First, adapter hit safety chain links. No problem, I removed the links. Second, adapter would not completely seat at bottom of gooseneck. Lacked 1/8" to bottom out. About the thickness of the sprayed in liner is. I made sure gooseneck hole was clear of debris and sprayed lubricant inside. Finally after a lengthy session with a sledge hammer and block of wood the adapter finally seated and locking pin in hitched engaged. Instructions did state that some modifications would be needed for bedliner installations. Come on Curt, you can't fab a adapter plate to accommodate bedliners. I have not pulled the camper yet with adapter installed, but when I do I'll write another review. Gave adapter 2 stars only for being a great idea


I recently purchased a curt x5 part number 16310. I was looking for a b&w companion but already had a hitch but couldn't use it with my b&w gooseneck plate. So i found the x5, I did some research but there are not many reviews of the product. On the first look I thought man it's just rails welded together but went ahead and ordered one anyway. When it arrived I could not believe how stout the set up was built. It is over-engineered which is great, I put it in the truck with no issues at all even with my spray in bedliner. I was even able to run the setup with my in bed toolbox which was not able to work with a companion in a short bed. Bottom line if you are on the fence about ordering it. Go ahead and just buy it.

buyer beware

Nice product, excellent idea, BEWARE, they do not specify up front that spray in liners WILL CAUSE AN ISSUE! Spray-in liners need to be cut out and so would plastic boxliners....