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  1. Gooseneck and Fifth Wheel Adapters
  2. Andersen
  3. Fifth Wheel Trailer to Gooseneck Hitch
  4. Bolts Over King Pin
  5. King Pin Adapters
  6. 24000 lbs GTW
Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter

Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter

Item # AM3100
Our Price: $550.99
You Save: $100.62
Gooseneck and Fifth Wheel Adapters
Shipping Weight: 44 lbs
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Don't say goodbye to your truck bed. Instead, say hello to the Ranch Hitch fifth-wheel-to-gooseneck coupler adapter. It offers 24,000 lbs towing capacity with 3" vertical adjustment for towing a fifth-wheel trailer with a gooseneck hitch. 1-800-940-8924 to order Andersen gooseneck and fifth wheel adapters part number AM3100 or order online at Free expert support on all Andersen products. Great prices and Fastest Shipping for Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter. Gooseneck and Fifth Wheel Adapters reviews from real customers.
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  • Reviews (156)
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Andersen Gooseneck and Fifth Wheel Adapters - AM3100

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Bolts Over King Pin
  • Andersen
  • King Pin Adapters
  • 24000 lbs GTW
  • No Offset
  • Adapts Trailer
  • Adjustable Height

Don't say goodbye to your truck bed. Instead, say hello to the Ranch Hitch fifth-wheel-to-gooseneck coupler adapter. It offers 24,000 lbs towing capacity with 3" vertical adjustment for towing a fifth-wheel trailer with a gooseneck hitch.


  • Heavy-duty adapter converts 5th-wheel trailer king pin to gooseneck coupler
    • Conveniently allows 5th-wheel camping trailer to be towed with a gooseneck hitch
  • Remote coupler release lets you engage and release coupler while standing alongside your truck
    • Eliminates climbing in and out of truck bed
  • 3" Vertical adjustment allows towing with multiple vehicles
  • Do-it-yourself installation in less than 1 hour
  • Works with standard 2-5/16" diameter gooseneck hitch balls
  • V-19 Certification
  • Made in the USA


  • Application:
    • Standard 2-5/16" gooseneck hitch balls
    • Measurement from bottom of the king-pin plate to top of the hitch ball when trailer and truck are level: 11-3/4" (when adapter is collapsed) to 14-3/4" (when adapter is extended)
    • Required clearance between the overhang of the trailer and the top of the siderails of your truck for safe operation: 5" or 6"
    • Trailers with standard or extended pin box
      • Extended pin box can be no longer than 24" (measured diagonally)
  • Capacity: 24,000 lbs GTW, 6,000 lbs TW
  • Vertical adjustment: 3"
  • Hardware included
    • Optional slide hammer used to ease installation (AM3103) sold separately
  • Safety chains sold separately
  • 1-Year limited warranty


  • This adapter is designed to be used with standard pin boxes only. Do not use with a cushioned or air ride pin box.
  • Any adapter that attaches in this way may void your trailer's warranty.

V-19 Certified for safety and featuring exceptional strength and versatility, this universal adapter converts a fifth-wheel king pin to a gooseneck coupler. This allows you to tow your fifth-wheel trailer without a bulky fifth-wheel hitch. The Ranch Hitch from Andersen Manufacturing is easy to install, even for the inexperienced do-it-yourselfer.

Measuring Your Truck and Trailer for the Ranch Hitch Coupler Adapter

You can perform these steps to determine if the adapter will work for your fifth-wheel trailer.

  1. Back your truck into position as if you were hooking up your fifth-wheel trailer, making sure that the truck and trailer are level.
  2. Measure from the pin plate (the bottom of the pin box) down to the top of the ball in the bed of your truck.
  3. The measurement should fall between 11-3/4" and 14-3/4". (The adapter is 11-3/4" tall when fully compressed and 14-3/4" tall when fully extended.)

Additional Measurements

Five or six inches of clearance between the overhang of the trailer and siderails of your truck is necessary for safe operation.

Diagram of pin box showing where to measure length

Measuring for Pin Box Length

The Ranch Hitch adapter is designed for trailers with a standard or extended pin box up to 24" long (measured diagonally). To find this dimension, you should measure from the centerline of the bottom of the king pin into the back of the pin box as far as you can reach. You may not be able to reach the very back of the pin box itself because the top of it may extend into the trailer. In this case measure to where the pin box disappears into the trailer.

3100 Andersen Manufacturing Ranch Hitch Fifth-Wheel-to-Gooseneck Adapter

Customer Satisfaction Score:

Customer Reviews

Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter - AM3100

Average Customer Rating:  4.6 out of 5 stars   (156 Customer Reviews)

Don't say goodbye to your truck bed. Instead, say hello to the Ranch Hitch fifth-wheel-to-gooseneck coupler adapter. It offers 24,000 lbs towing capacity with 3" vertical adjustment for towing a fifth-wheel trailer with a gooseneck hitch.


I returned it, because it was going to change the structural integrity of my 5th wheel camper. Did not use the product.


Real fast shipping, and a competitive price. Easy to follow directions and simple installation. This is a great product.


High quality, heavy duty. I was hoping this was a more temporary mount if I decided to utilize the 5th wheel king pin. However, this is threaded on with 400lb torque and I had to tack weld the mount to the bottom of the king plate as there was no access to bolt through the pin box.


As with any Anderson product I have used, I'm very happy. Very well made products and great customer service


I have had great success with this converter. Easy to install, I love the remote release cable. Ride is comfortable. Did not disappoint whatsoever.


Recently purchased my first covert a ball hitch it arrived chuckle and installed in under an hour works well


Works great! Used the Anderson Ultimate in the past and it worked great until I put a fuel tank in the truck. After that there wasn’t enough room for the Anderson, needed something different. Check spacing on several hitches but none allowed the room. The gooseneck adapter works as advertised and now have extra bed space for gear. Picked up the gooseneck safety chains also from another vendor just to add the extra safety margin in there. Adapter is easy to hook up and works great. Still have to climb in the bed to hook up safety chains but it does work. Also love the plastic pad between the ball and the hitch so I don’t have a greasy gooseneck ball to deal with.


Haven't installed yet, but is seems very well built and heavy duty. Shipping was fast and easy, no hassle


I thought installation was very easy and it looks like a very well built and sturdy set up. I am actually installing it now and am very impressed


Seems to be a very well built product. Good price and shipped fast. Fairly simple to install, I recommend having a friend or two around to help tighten everything down. Also I preferred to bolt rather than weld ( unless you have a closed off pin box), you never know when you may need to go back to fifth wheel in a hurry.

L T.


How does collar system attach to king pin ? Thanks

Patrick B.


There is a threaded collar that is fitted to the king pin. You would slide the coller up on the king pin. While holding the collar, you will take a split collet and fit that where the jaws normally grab the king pin. You will slide the threaded collar over the split collet and using either a pulley puller or Andersens hammer to seat the collar fully onto the split collet. I have added a pictorial of this portion of the instructions to the photo gallery and linked it here as well. The base of the adapter threads onto the collar and is tightened to ~1200 ft. lbs. The process for getting that much torque is outlined in the instructions and uses the included spanner wrench and a 4 foot cheater pipe. Finally, you will use either the inlcuded four Grade 8 bolts or four 1 inch tack welds to finish securing the adapter to the pin box. If you want to be able to remove adapter, make sure you can access the inside of the pin box so you can use the bolts vs. welds.


5 star! Shipping was incredibly fast.


It is so good to see that there is still good customer service, the product was just what I need and affordable as well.

Robert H.


Its works great I have since converted 2 more of my fifth wheel trailers to this goose neck hitch


I have pulled my camping trailer approx. 300 hundred miles since I installed the adapter. It works great. Installation was pretty simple, the only difficult part was drilling the four holes thru my fifth wheel box. E-trailer service and shipping were great!


Received product 5-10-2017
on 5-11-2017
Gave a test run and seems good fella good and looks great. I like the 24000 and 6000 lbs feature think it is stronger of course.


As always, a great product from! This company is fantastic. Very helpful, with a wide selection of products and fast shipping. I have been a customer for a couple of years now, and always make this my first stop when looking for parts and products for my camper and trailer. You will not be disappointed in the service, and if you have any questions Renee will be glad to hunt down the answers for you. Thank you again!


Package came in good shape.Pleasure doing business with.


A friend and I installed the gooseneck adaptor with no trouble at all. The first time I pulled my trailer, I didn't think it was behind me. It made the pull so easy. Thanx so much.....


It worked as advertised your service was great
Thanks Ken


Well built, perfect fit, very easy to install, definitely worth it



Still holding up great, super gooseneck Ranch hitch


Product looks good not installed yet, was hoping to talk to an actual person before I ordered to see if any discounts were available but never got to talk to anyone neither on the phone or chat so ordered on line


Great product! Super fast shipping! Thank you Etrailer!


excellent service and excellent product the AM3100 is the best choice to go from 5th wheel to gooseneck


Very easy to install had to use weld methed on king plate like very well would buy again. Price very good shipping good.

Deriek E.


I have an Ultra-Fab trailair air ride kingpin system on my fifth wheel. Can the gooseneck adapter be installed on that type of system?

Patrick B.


According to Ultra-Fab, the Trailair pin boxes are not to be used with any kind of gooseneck adapter where the pin box is adapted to attach to a gooseneck ball. You can however adapt the truck to accept a 5th wheel hitch. Your best bet would be a fifth wheel hitch that anchors into a gooseneck like the Draw-Tite Hi-Rise, part 9480 or a Curt Fifth Wheel Adapter plate like C16210 or 16310.


works as advertised, I would recommend this product.


Product shipped/arrived timely from eTrailer; installation instructions provided by Anderson Manuf are very clear/easy to follow. Hitch is very easy to install. Attached to 30' fifth wheel, 11,000lbs tow weight and immediately pulled the trailer thru steep hill country without any hesitation. Pulling cattle trailers/heavy hay trailers, i know heavy duty hitches when i see them and this is a great product; HIGHLY recommended. Remote latching mechanism is a great feature; it too is very solid/secure

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