bing tracking image
  1. Gooseneck and Fifth Wheel Adapters
  2. Convert-A-Ball
  3. Fifth Wheel Trailer to Gooseneck Hitch
  4. Bolts Over King Pin
  5. 20000 lbs GTW
  6. King Pin Adapters
Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter - 12" to 16" Tall - 20,000 lbs

Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter - 12" to 16" Tall - 20,000 lbs

Item # CAB-C5G
lowest price pledge
Our Price: $466.15
You Save: $167.22
Gooseneck and Fifth Wheel Adapters
This item qualifies for Free Shipping
Shipping Weight: 66 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Use your gooseneck hitch to tow your 5th-wheel trailer by hooking up with this adjustable coupler adapter. Poly cushions absorb shock for a smooth ride. Adjustable height fits multiple applications. 20,000-lb GTW. 1-800-940-8924 to order Convert-A-Ball gooseneck and fifth wheel adapters part number CAB-C5G or order online at Free expert support on all Convert-A-Ball products. Guaranteed Lowest Price and Fastest Shipping for Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter - 12" to 16" Tall - 20,000 lbs. Gooseneck and Fifth Wheel Adapters reviews from real customers.
  • All Info
  • Reviews (720)
  • Q & A (0)
  • Photos
  • Why etrailer?

Convert-A-Ball Gooseneck and Fifth Wheel Adapters - CAB-C5G

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Bolts Over King Pin
  • 20000 lbs GTW
  • Convert-A-Ball
  • King Pin Adapters
  • Adjustable Height
  • Adapts Trailer
  • No Offset

Use your gooseneck hitch to tow your 5th-wheel trailer by hooking up with this adjustable coupler adapter. Poly cushions absorb shock for a smooth ride. Adjustable height fits multiple applications. 20,000-lb GTW.


  • 5th-Wheel-to-gooseneck adapter lets you tow your 5th-wheel trailer with your gooseneck hitch
    • Coupler bolts to your trailer's king pin and connects to gooseneck ball
  • Interior polyurethane cushions act as shock absorbers for smooth, safe ride
    • Reduce bounce and vibration
    • Minimize wear and tear on both your trailer and tow vehicle
  • Adjustable height fits multiple applications
  • Fail-safe king pin adapter has built-in, positive-lock feature to secure trailer to hitch ball
    • Steel extension handle lets you slide bar to lock or unlock coupler from outside the truck bed
      • Acts as a latch, keeping adapter secure
      • Can be replaced with a padlock (sold separately) for greater security
  • Durable, cast steel construction
  • Rust-resistant powder coat finish
  • Safety chains included
  • Made in the USA


  • Towing capacity: 20,000 lbs
  • Pin weight capacity: 4,000 lbs
  • Application: 2-5/16" gooseneck hitch balls
  • Adjustable height (from top of gooseneck ball to base of king pin box): 12" - 16"
  • Collapsed height of adapter: 15-1/2"
  • 2-Year limited warranty


  • Not recommended for use with Reese Elite Series gooseneck trailer hitches
  • Not recommended for use with factory-installed towing prep packages which use a hitch ball with an integrated locking lever.
  • Not compatible with sidewinder king pins.
    • When used together they produce two pivoting points at both the ball and the turret which is a safety hazard.
  • Not compatible with any cushioned or air ride 5th wheel king pin.
  • Not compatible with Rota Flex king pins
  • Any adapter that attaches in this way may void your trailer's warranty.

Finding the Correct Size Fifth-Wheel-to-Gooseneck Adapter

After backing the vehicle under the trailer, measure from the top of the ball in the truck bed to the base of the pin box on the trailer. This will indicate the height of the adapter that you need.

Convert-a-Ball Collar

Secure Installation

The included collar slides over your fifth-wheel trailer's king pin and is held in place with set screws. Additional, larger set screws that are mounted at the top of the coupler adapter then tighten onto the collar.

Convert-a-Ball Locking Feature

Positive-Locking Feature

This trailer coupler adapter features a simple, secure latching mechanism for safe, easy hookup with the hitch ball. The convenient extension handle grabs the sliding latch so that you can easily lock or unlock the coupler from outside the truck bed. Once the coupler is engaged, hook the handle through the hole in the sliding latch's track to ensure that it remains securely coupled. For extra safety, once the coupler is latched, you can replace the handle with a padlock (sold separately) to secure the trailer to the hitch ball during towing. Use a lock while your trailer is being stored to guard against towaway theft.

Pin Box Length

Note: There are no recommended limits to the length of pin box on which the Convert-A-Ball trailer coupler can be used.

C5G1216 Convert-A-Ball Adjustable Fifth-Wheel-to-Gooseneck Coupler Adapter - 12" to 16"

Customer Reviews

Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter - 12" to 16" Tall - 20,000 lbs - CAB-C5G

Average Customer Rating:  4.7 out of 5 stars   (720 Customer Reviews)

Use your gooseneck hitch to tow your 5th-wheel trailer by hooking up with this adjustable coupler adapter. Poly cushions absorb shock for a smooth ride. Adjustable height fits multiple applications. 20,000-lb GTW.


As with the 5th wheel hitch i ordered a year ago the box it was shipped in is it real bad shape I don't know if the hardware package is in the adaptor that I received on Monday im working long days right now and won't get a chance to look in what's left of the box till the weekend I will let you know if this one needs to be returned as the 5th wheel hitch was. Strike 2

I have sent your information over to our customer service department in order for them to better assist you.
-- Etrailer Expert Katrina B - 05/24/2022


The Product installed with no problem. I just got back from a 900 mi. round trip to Utah. I was in elevations from 1000 ft above sea level to 9000 ft. above sea level. I It hooks up very easy and is very good compared the my old system. I would have given it a Excellent except that it (rotated) turned about 1/4 of an inch.on the king pin as you can see on the Photos. I will be drilling holes in the King Pin Extension and putting in the four bolts before I take it out again. I was suprised that I did not receive the optional bolts nor was I asked if I wanted them. .I did order on line so I accept responsibility for it. At no time did I feel any safty issues.
I had replaced the suspension on my trailer with the easy ride system and combined with your Convert-A-Ball Cushioned System my wife said there was a huge emprovement and I also felt a big difference it the Truck. It is a well engineered product and my raiting will go to Excellent after I put in the four Bolts. You can send me the bolts or I will get my own.
Attached are some photos of my Truck and Trailer.
The Trailer is a 2000 Forrest River Sierra Sport Toy Hauler.
I bought it new.
9200 Dry.
(2) 6500 lb Axels
1900 lb. on the Pin (est)

If Questions, Feel free to call

Have a Great Day

How do you plan on installing the 4 additional bolts?
-- comment by: Carlos G - 07/27/2014

In the installation instructions Convert-A-Ball discusses the optional installation of additional bolts. However, these bolts are available only for the customer to contact the manfucturer, and are not sold individually. To gain access this is usually done by disassembling the pin box, or by drilling access holes in the plate, but this all depends on the configuration of your pin box, and if this adapter is intended to be a temporary or a permanent solution.

-- Etrailer Expert Rachael H - 7/29/2014

I did as I said I would do and I drilled four hole in the pin box and installed four bolts. I feel much more confident in the system. I am very happy with it at this time. To drill the holes I removed the pin box and used the adapter for a pattern, I then drilled the holes by hand. 1/2 in Drill
Joe B - 07/17/2015

Joe, what is the box length of your Ram?
-- comment by: Raymond L - 10/21/2015

Raymond L.: My Ram is a 3500 4X4 SRW It has the 8Ft bed. I pulled the same Toy Hauler with two different Quad Cab PUs over the years with 6-12 ft. beds. One 2WD and one 4X4 before this one. I ordered this P/U as a Std. Cab. It is set up like a Laramie inside. towing I get 10-13 MPG. Empty 22 MPG It tows at any speed I want in the Mountains.
-- comment by: JoeB - 10/26/2015


I recently bought a 36ft 5th wheel toy hauler and needed a way to pull it, we didn't really want to install a 5th wheel hitch because we didn't want the extra holes in the bed of the truck so we bought this. I was nervous at first but this hitch adapter work very well. It mounted to the 5th wheel easily and sat right on the gooseneck ball that came built into our truck. It also disconnected from the truck with ease. We have left it hooked onto the camper for now for quick movement if needed.

I am still using the goose neck adapter, I now take it off if my camper is parked for a while just to reduce stress on the front end of the 5th wheel. I would recommend!
Lindsey - 11/01/2017


Installation is a breeze. I'm a short but stocky guy so installing it by myself wasn't hard at all. I just lowered the trailer to where I had enough leverage to hold the adapter up and be able to tighten the bolts down with the other hand. Torqued everything down to spec and was on the road in no time. Pulled off after 50 miles and retorqued everything as any good transporter does. This is where my review gets bad. The bolts that hold the adapter to the kingpin couple failed. They crushed on the ends and damaged the threads. Keep in mind, I followed the torque specs TWICE. I didn't have the twisting issues that others have had. It took me 30 min with a pull bar and a piece of pipe to get the bolts backed off enough to get the adapter off the kingpin coupler. Today I spent 30 min working ONE bolt completely out of the adapter and this is what I found. I am in contact with etrailer to get it resolved. The bolts and the inner threads are damaged. Hopefully this is just a lemon and I will get a replacement hassle free. Other than this, this is a great design and towed well.

Great product but the bolt crushing problem is a major one that I am working directly with Convert-a-ball to get fixed. They admit it is on their end and we are working on
Joe N - 12/05/2016


I just wanted to tell the folks at etrailer how great of an experance I had ordering from them. I ordered a 5th wheel to gooseneck adapter. From the time the phone rang until Wayne had taken my order was less than 2 minutes. These people know their stuff and the price was great. The install was flawless, fit perfect. I was kept informed several times by e mail what the status of my order was. My order came a day early even during a holiday week.
I am sure glad to have some room in my p/u bed while pulling my 5th wheel.
Thanks Wayne and thanks etrailer

Danny I notice you have a morryde pin box on your trailer. did you change the skid plate over to the morryde RPB77006 gooseneck adapter plate. to use this adapter?
-- comment by: Walter, R - 12/02/2015


I want to thank Etrailer for the great customer service I received. Emily H, was very helpful in the process of my purchase. The c5g _1216 converter ball adapter was a very well made and sturdy product. And will handle the 39ft toyhauler that I have it installed on. The installation was very easy and simple. So thanks again Etrailer for a great product and fast delivery, and great customer service.

Walter, R

When I first received it I thought it would work out. But after using it for a couple of months, I had to remove it. The ride quality was terrible and the jerky ride while towing was unbearable. Plus the additional stress it put on the frame of my fifth wheel trailer over time would cause even more problems. So I removed it and installed a Curt fifth wheel hitch and now the ride is much better and smoother with no jerkiness. Would not recommend this adapter at all.
Walter, R - 12/16/2016


This is a great product. I’ve owned several gooseneck adapters over the years and this one is definitely the easiest to install and performs great!


the convert-A-Ball adapter was great. Easy to install and allowed us to pull our new trailer. Order was quick and complete.
Thanks for taking care of this customer.

Don - 03/09/2022


I called for tech support. They were very helpful. Our flatbed has a recessed box and they coached me how to adjust the hitch.


Shopped around a bit before finally ordering from etrailer. Price was nearly $xxx lower than everywhere else I've looked, and only took 2 days from order being placed for it to arrive. Exactly what i needed to replaced the coupler that came on damaged on my trailer!


Product arrived as described. Was very easy to install, took about 30-45 minutes including reading the instructions. It would be nice if the bolts to secure the hitch to the collar, as well as the bolts used to adjust the height were a standard bolt head vrs a square head. Other than that very easy & straight forward. I like this adapter much better than having the traditional 5th wheel hitch taking up room in the bed of my truck.


Bought a truck with a heavy duty gooseneck hitch. Found a fifth wheel we wanted to buy. I ordered the CAB-C5G with 3 day shipping. It was here in 3 days! The unit was very heavy and the packaging was very well done. I read the instructions and gathered up the tools needed for the installation. We drove about 125 miles with it still in the box not knowing exactly what was going to happen. The seller and I took about a half hour to install it on the trailer and a few more minutes to adjust it in his driveway. Once we got it out on the road we noticed the trailer was front high. We took about 20 more minutes in a parking lot to make the final adjustments. My truck is a 2011 GMC 3500 single wheel so it is pretty high.
On the road we experienced no problems on the 125 mile trip home. I was a little skeptical about how this would feel going down the road but after a little while we were doing the speed limit at 70 mph on route 93 South in NH coming out of VT. We stopped after 50 miles or so to check the torque on the bolts and it was fine.
This adapter was supposed to be a short term fix until I could figure out a fifth wheel setup with the given hitch, but I think I just may like this on a longer term. With the fold over ball, I can use the bed of the truck without having to remove a big heavy hitch. This adapter is HEAVY DUTY, emphasis on heavy! Hooking up you have to have the trailer a little higher than normal to clear the ball height. Also yo do not have the luxury of the 5th wheel to guide you in if you're a little off. Mostly pros with this unit, can't come up with any cons. Great product and I would recommend it.


We just installed and pulled a 5th wheel toy hauler 400 miles!! A what a great product, converter was heavy duty, 1 1/2 hours to install and set up. We have been pulling a goose neck horse trailer for years and was so happy that this adapter enabled us to haul this new trailer without any problems. The toy hauler (10,000 lbs empty) pulling was great and tracked straight, even with the 25+ miles per hour of wind all the way home. Just went between 55 and 60 miles per hour no problems. We are pulling the trailer with a 1999 F250 Superduty. Also have to say that etrailers customer service, especially Kim P. was the best!! They now have a new customer for life!


This piece is great! I don’t have to drill any more holes in the bed of my truck to install a 5th wheel. Easily installed in about 30 minutes. I will recommend this to anyone that asks. For those looking to get one, here are the tools you’ll need to install: 19mm crowfoot 1/2” drive, 27mm crowfoot 1/2” drive, 3/8” hex 1/2” drive and a 1/2” drive torque wrench. I installed it by myself. I just back the truck underneath and lowered the kingpin down onto the adapter, after installing the kingpin ring.


Very well made adapter. Was reluctant to put on a gooseneck adapter do to the naysayers but I went ahead and purchased one and I couldn’t be happier. I installed the adapter in less than 15 minutes. I did have the needed tools on hand so that most definitely made install much easier. Pulls my 5th wheel perfectly. Highly recommend.


Really like it gives me more room in the bed of the truck with my hidden hitch. Saves a lot of time and work it’s Costs more than competitors.. but wouldn’t want to trust my safety with a Walmart brand converter hitch just to save a dollar. Short story long I am pleased with my purchase.


Researched several products similar to this and this was the best. Received it in a few days. Exactly what I needed for my camper. Installation was easy. YouTube video was very helpful. Will recommend to anybody.

what is distance from rear bumper and lower front of fifth wheel. also it looks like you ,are at a skew with your adapter, is that with all the weight lowered on to the truck. if not how well does it tow like that.
-- comment by: donnie h - 09/13/2015

The space between is about 2-1/2 feet. Plenty of room. That is how my hitch sets fully, its mostly due to me running 315s on my tires. But Ive pulled it all around the south and even up to the Great Lakes. Never once had a problem
-- comment by: John W - 09/21/2015

thankyou for your answers
-- comment by: donnie h - 09/23/2015


This conversion was awesome starting from the ordering then tracking to the installation and did it by myself (63 yrs old)
I’ll recommend this to all my Rv friends

Fantastic!!! No problems!
Guy S - 06/15/2020


Very happy with the convert a ball. Fifth wheel to gooseneck adapter. Less than 15 minutes by myself. All ready used it. Over the years etrailer has always been reliable.


I was looking to maximize the space in my bed and didn't want a heavy fifth wheel hitch to move in and out. I reached out to the pros at etrailer and they helped me pick the right setup. I chose to go with the Curt hideaway hitch and the Convert-A-Ball. I couldn't be more happy with their service and fast delivery.


After installing this adapter I noticed it was flexing the frame of my trailer. The added stress from the adapter is more than the 5th wheel pin box was designed for. It didn't say anything about this in the product description. I called etrailer to see if I could exchange the adapter for a proper 5th wheel setup and they told me because I had used it once they couldn't help me. Be careful with these things, your trailer may not have been designed with them in mind.


I just installed it so I have not had time to use it. However the installation was pretty easy and the unit seems to be well put together. The only negative was the delivery time, the unit was out of stock for quite a while, all in all a satisfied customer thank you


Ordered this prior to the arrival of my new Eagle RKS-313. The CAB-C5G was easy to install on the trailer, instructions were straight forward and easy to follow. One season under my belt with a Fifth Wheel, and it's been a Great one. Connect & disconnect are smooth and quick. With the hidden Goose in my Ram 3500, i have ample room for necessities to have a great week/weekend of camping. Very happy with my CAB-C5G!!


This product was a great way to keep the bed of my truck clear by using my flip up goose neck ball to pull my new 5th wheel. I just got back from my first trip pulling through Washington, Oregon, and Idaho and it pulled smooth and great! I had conditions from very hilly two lane roads with 6% slopes to 75mph interstates. I do have to say that the included release lever (the one you can use from the side of the truck) doesnt make any difference because you still have to climb into the truck to remove the chains. Also my truck is a F250 which sits stock a little taller and in the lowest (12") position the trailer rides at an angle up to the truck bed (photo)so a good idea to measure closely before purchase.


I searched and searched for days to find whether I wanted to go with the fifth wheel hook up or go with the gooseneck adapter to fifth wheel. I'm still glad to this day that I made this decision to go with this adapter..It's simple and easy.. Installation was a breeze, instructions & pics to a T..Ive told everyone about this product and still talking about it I definitely recommend this product!!..

Show More Reviews

Ask the Experts about this Convert-A-Ball Gooseneck and Fifth Wheel Adapters

  • Which Way does the Red Lever Face when Installing the # CAB-C5G 5th Wheel to Gooseneck Adapter
    The red lever on the Fifth Wheel to Gooseneck Cushioned Trailer Adapter, item # CAB-C5G, should be installed to the drivers side of the bed of the truck. This makes for easier locking and opening of the gooseneck adapter. It has been a while since I have looked at one of these. I was pretty sure that there is a sticker that shows the front side of the adapter. I went out to the warehouse and checked to be sure and there is a sticker, labeled front, on the left side of the coupler when...
    view full answer...
  • How to Attach Fifth Wheel to Gooseneck Cushioned Trailer Adapter # CAB-C5G to the King Pin
    On the Fifth Wheel to Gooseneck Cushioned Trailer Adapter, # CAB-C5G, you do not have to do any welding or bolting, the collar slides over the king pin and there are set screws that are tightened around the king pin. Then the adapter is screwed to the collar over the king pin. The mounting screws are included. If you want a semi-permanent application then the adapter can be screwed to the trailer or if you want a permanent application it can be welded to the trailer.
    view full answer...
  • Bolting Down a Fifth Wheel to Gooseneck Cushioned Trailer Adapter
    You may not need to drill holes in the pin box of your new fifth wheel to use the Fifth Wheel to Gooseneck Cushioned Trailer Adapter, part # CAB-C5G. If the pin box already has holes in it, you would bolt the adapter to the bottom of the pin box without having to drill.
    view full answer...
  • 5th-Wheel-to-Gooseneck Trailer Hitch Adapter Recommendation for a Toy Hauler
    You are correct in that some gooseneck hitches have weight ratings that will handle up to 26,000 pounds or more. However, if you use this adapter, # CAB-C5G, you have to abide by the lowest limiting factor. For instance, if you had a heavy-duty gooseneck hitch and then used this adapter to pull a fifth wheel trailer, the adapter would be the limiting factor of 20,000 pounds towing capacity and 2,000 pounds tongue weight capacity. If you are trying to tow your toyhauler fifth wheel with...
    view full answer...
  • What size ball fits the Gooseneck cushioned trailer adapter CAB-C5G?
    The Fifth Wheel to Gooseneck Cushioned Trailer Adapter fits a 2-5/16 inch ball. This adapter is adjustable between 12 and 16 inch sizes, so it is best to measure from the top of the ball on the truck to the base of the pin box on the trailer to find the correct size for your application.
    view full answer...
  • Will the Fifth Wheel to Gooseneck Cushioned Trailer Adapter Fit On My Gooseneck Ball and King Pin
    Yes, the Fifth Wheel to Gooseneck Cushioned Trailer Adapter, part number CAB-C5G, will install easily to your fifth wheel king pin and your 2-5/16 inch gooseneck hitch ball. You will need to measure to determine the correct height adapter that you will need for your application. After backing the vehicle under the trailer on a level area, measure from the top of the ball on the truck to the base of the pin box on the trailer, this measurement will let you determine which size adapter will...
    view full answer...
  • Is the 5th Wheel to Gooseneck Adapter Built to Hold Up to Repeated Mounting and Dismounting
    The Fifth Wheel to Gooseneck Cushioned Trailer Adapter, part # CAB-C5G, is a heavy built unit. It will withstand the repeated mount and dismounts that you are speaking of. The only draw backs to this unit are that it will require you to remove the collar from the adapter and then the trailer each time you drop the trailer and you will need to decide which height will work best for your multiple towing situations. It should last a very long time and be safe as long as care is taken when...
    view full answer...
  • Fifth Wheel to Gooseneck Cushioned Trailer Adapter Torque Load on Kingpin Box
    This adapter will not put any excessive torque on the kingpin box. However this adapter is not designed for continual or cross country use. The ideal purpose is for adapting the trailer to your gooseneck for a short trip. We do have customers that do use this continually. Usually a rougher ride is the outcome, but it would not damage the kingpin box.
    view full answer...
  • How To Select the Right Height Adapter for My Gooseneck to 5th Wheel King Pin
    Yes, you should be able to measure from the top of the ball on your gooseneck setup to the top of the fifth-wheel head, where the pin box rests, to get the correct measurement for selecting the proper gooseneck adapter.
    view full answer...
  • Will Fifth Wheel to Goosneck Adapter Part # CAB-C5G Fit with 3 Inches Between Ball and Kingpin
    In order to tow your fifth wheel trailer on a gooseneck hitch with an adapter, you need to take a different measurement. After backing the vehicle under the trailer, measure from the top of the ball on the truck to the base of the pin box on the trailer. The adapters we offer are 12, 14 or 16 inch. If the measurement from the top of your ball to the base of the pin box is not one of the above, then you will need to consider other options. You could either use a fifth wheel hitch to tow...
    view full answer...
  • What is the Manufacturers Warranty on the Fifth Wheel to Gooseneck Cushioned Trailer Adapter
    The Fifth Wheel to Gooseneck Cushioned Trailer Adapter, item # CAB-C5G, has a manufacturers warranty for 1 year and is limited to defects in material and workmanship. We have had no problems with this item, the manufacturer stands behind their product and will replace it if there is an issue.
    view full answer...
  • How To Determine Height Needed On 5th Wheel-to-Gooseneck Coupler Adapter On A 2005 Dodge 3500 4WD
    To see what height you will need on your 5th Wheel-to-Gooseneck coupler adapter you can back your 2005 Dodge Ram 3500 4WD Dually truck into position as if you were hooking up your fifth-wheel trailer, making sure that the truck and trailer are level. Make sure you have 4 inches of clearance between the top of the bed sides and the bottom of the trailer loft for pitch and roll. This should get you the right measurement to make a decision. Then, measure from the pin plate (the bottom of...
    view full answer...
  • Will 5th Wheel to Gooseneck Trailer Hitch Adaptor CAB-C5G Help With Trailer Lurching and Bouncing
    The Convert-A-Ball fifth-wheel to gooseneck adapter # CAB-C5G should help with the bouncing and lurching you have been feeling, as the cushioning inside the adapter will soften the back and forth and up and down motions at the point where the trailer is connected to the vehicle. Movement would limited to a maximum of 3/4 of an inch, smoothing your ride considerably. You would also notice a difference in the severity of the hard jerks and loud clangs you get when pulling forward or stopping. To...
    view full answer...
  • Do You Have to Measure to Determine if You Can Use the Covert-A-Ball 5th Wheel to Gooseneck Adapter
    No, you do not have to measure to determine if the Convert-A-Ball adapter # CAB-C5G can be used. But if you want to make sure the 12 to 16 inch adjustable height range is going to work you can certainly measure. Basically you will measure from the tops of the bed corrugations to the bottom of the skid plate on the trailer with the trailer level and both parked on level ground. At the 12 to 16 inch height you will need to have at least 5 or 6 inches from the tops of the bed sides to the...
    view full answer...
  • Can Convert a Ball Fifth Wheel to Gooseneck Hitch be Used with Short Bed Truck
    In most short bed situations the Convert a Ball Fifth Wheel Adapter part # CAB-C5G will not give enough clearance to make a tight turn unless the trailer has a narrower than normal nose. Here is the formula to determine if you'd have enough clearance: (A + B) - C = Clearance A = Distance from the gooseneck ball to the truck cab B = Offset used, (for here zero) C = Width of the nose of the trailer divided by 2.
    view full answer...
  • What is the Best 5th Wheel Trailer Hitch or Gooseneck Option to Maximize Space in My Truck Bed
    The best way to maximize the usable space in your truck bed, while still using a 5th wheel, is to use a Signature Series 5th wheel. When not in use, the 5th wheel can be removed leaving 4 mounting feet in the bed that rise only a couple of inches above the bed. I have attached a video below showing installation to give you a better idea of how the Signature Series works. If you wanted to go with a gooseneck, you could use something like a Hide-A-Goose. With this hitch, the ball can be...
    view full answer...
  • Can the Convert-A-Ball 5th Wheel to Gooseneck Adapter CAB-C5G be Used Without Bolting or Drilling
    You can use the Convert-A-Ball Cushioned Fifth-Wheel-to-Gooseneck Adapter, # CAB-C5G, without bolting them to the pin box on your fifth wheel trailer. This makes the adapter fairly easy to move from trailer to trailer without having to modify the trailer pin boxes. These adapters can be bolted on to your pin box for added security or if you are planning on using it on a more permanent basis, but bolting or drilling is not necessary for use.
    view full answer...
  • Gooseneck or 5th Wheel Recommendation for Towing Heavy Loads
    Typically gooseneck hitches will have higher capacities than 5th wheel hitches. So if you plan on towing pretty heavy that would be what I would recommend. Most of the time the gooseneck hitches will have a 30,000 lb capacity. You will need to make sure you do not exceed the capacity of your tow vehicle though as every tow setup is limited by the lowest rated component in the setup. If you email me back with the year/make/model of your vehicle I can recommend you a hitch.
    view full answer...
  • Using 5th Wheel to Gooseneck Hitch Adapter on Fifth Wheel with Cushioned Pin Box
    It is not necessary to bolt the # CAB-C5G adapter to the underside of the 5th wheel pin box, although you can do so if you wish. The necessary hardware is not included, but Convert-A-Ball will provide it free of charge if you call them at 800-543-1732. If you use an offset adapter like part # CAB-C5GX1216, the extra stress placed on the pin box by the offset will require that the adapter be bolted to the pin box using the included hardware. This being said, Fifth Wheel Trailer to Gooseneck...
    view full answer...
  • How Do Cushions on Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter # CAB-C5G Work
    I have edited a cut-away photo for you showing how the cushions of the Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter work. The photo shows an older version of the # CAB-C5G, but the cushioning on the current model looks and acts similarly. The polyurethane cushions help isolate the portion of the assembly that attaches to the gooseneck ball from the portion of the assembly that attaches to the fifth wheel pin box. The CAB-C5G does not include the optional bolts to secure the...
    view full answer...
    Image 1 for
  • What is the Torque Specification for the Cap Screws on Convert-A-Ball 5th Wheel Adapter # CAB-C5G
    The installation instructions for the Convert-A-Ball 5th Wheel Adapter, part # CAB-C5G, specify that the cap screws should be tightened evenly, making sure the main body of the adapter moves upward toward the pin box until firmly seated. Then they should be torqued to 100-ft-lbs. Next the jamb nuts should be tightened until firmly in place, followed by attachment of the safety chains.
    view full answer...
  • How is Height Adjusted on Convert-A-Ball 5th Wheel to Gooseneck Adapter Part # CAB-C5G
    The Convert-A-Ball Cushioned 5th Wheel-to-Gooseneck Adapter uses two set bolts that when loosened, will allow the height of the adapter to be adjusted from 12 to 16 inches. This adapter is the only cushioned height-adjustable model we offer. If you click on the smaller photos on the product description page, you can see the adapter at different heights. I have also edited a photo that shows the adjusting bolts.
    view full answer...
    Image 1 for
  • Determining Needed Fifth Wheel to Gooseneck Adapter Height
    The easiest way to do this would be to determine the exact adapter height you need. You will need to take some measurements. Jack the trailer so that it is level, and then back the truck up as if you were hitching it. Measure the distance from the bottom of the pin box (not the king pin) to the top of the gooseneck ball. (See provided diagram). This distance is the adapter height needed. You will also need to make sure there is a minimum of 6 inches clearance between the bottom of the trailer...
    view full answer...
    Image 1 for
  • Do Polyurethane Cushions in Convert-A-Ball 5th Wheel to Gooseneck Adapter # CAB-C5G Need Replacing
    The polyurethane cushions do not need to be replaced on the Convert-A-Ball 5th Wheel to Gooseneck Adapter, part # CAB-C5G. I spoke with my contact at Convert-A-Ball and he said the polyurethane cushions are not accessible for replacing. He said that the polyurethane that is used in these cushions is the same material used in the suspension of the over the road trucks and they will not wear out. The only thing that will cause damage to the polyurethane cushions is temperature over 500 degrees,...
    view full answer...

< Previous
123. . .26

Do you have a question about this Gooseneck and Fifth Wheel Adapter?

  • Why

    At we guarantee:
  • Highest quality gooseneck and fifth wheel adapters for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate gooseneck and fifth wheel adapter information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Jackie C
Expert Research:
Jackie C
Employee Mike L
Expert Research:
Mike L
Employee Sarah L
Expert Research:
Sarah L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Andrew K
Video by:
Andrew K
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Noah M
Updated by:
Noah M

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.