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. Call 800-298-8924 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.
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Gooseneck and Fifth Wheel Adapters > Adapts Trailer > Fifth Wheel Trailer to Gooseneck Hitch > Bolts Over King Pin > King Pin Adapters > Adjustable Height > No Offset > 20000 lbs GTW > Convert-A-Ball

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

Convert-A-Ball Gooseneck and Fifth Wheel Adapters

(100 reviews)

Code:   CAB-C5G



Shipping Special

Shipping Weight: 65.85 pounds


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

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
  • Height: 12" - 16"
  • 2-Year limited warranty

Warning: 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. Also not compatible with any air ride 5th wheel king pin.

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"

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

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Demo Convert A Ball Trailer Coupler CAB C5G
Convert-A-Ball Trailer Coupler CAB-C5G Review
Video install convert a ball fifth wheel gooseneck adapter cab c5g
Convert-A-Ball 5th-Wheel-to-Gooseneck Adapter Review

Video Transcript for Convert-A-Ball Trailer Coupler CAB-C5G Review

Today were going to review part number CAB-C5G. This is the Convert-A-Ball cushion fifth wheel to gooseneck adapter. It is height adjustable from 12 inches to 16 inches and it has a 20,000 pound towing capacity. This fifth wheel to gooseneck adapter will let you tow your fifth wheel trailer with your gooseneck hitch. This coupler bolts to your trailers kingpin and then itll connect to the gooseneck ball in your truck bed. On the inside they do have the polyurethane cushions which will act as shock absorbers for a smooth, safe ride.

They help reduce bounce and vibration and theyll minimize the wear and tear on both your trailer and your tow vehicle. This does have adjustable height which I can show you right here. This will slide up and down for adjustable heights which will fit many applications. It is a fail-safe kingpin adapter. It has a built in positive lock feature to secure the trailer to the hitch ball.

The steel extension handle lets you slide this bar to lock or unlock the coupler from the outside of the truck bed and itll act as a latch by keeping the adapter secure. This part is made of a durable cast steel construction. It does have a rust resistant powder coat finish. It does come with the safety chains which are included. Comes with the locking collar and again the steel extension handle.

This part is made in the USA. It does have a towing capacity of 20,000 pounds. It has a pin weight capacity of 4,000 pounds and it does fit on a 2 5/16th gooseneck hitch ball. Again the height is adjusted from 12 inches to 16 inches. It does come with a two year limited warranty.

First off I want to show you how youd actually install this onto your fifth wheel and your gooseneck. Basically you would start off with this locking collar. It has three large Allen head bolts in it and theres also three indentations. Basically what you would do is on it it says, Top front. So this is the top front right here. Then this white locator mark here is where youll line this up to the exact center on the front of your kingpin box. This would basically slide up onto your kingpin and then you would tighten these Allen head bolts down to where they will rest on the bottom lip of your trailer kingpin. Snug them up and then this would be secured on your kingpin on your fifth wheel. Then this coupler right here will basically slide up onto this collar right in here. It would slide up on here. These three jam nuts right here at the top will actually tighten down into these indentations on the locking collar and you would torque them down to hold it into place. Now on this adapter as you can see right up here it says front, right here it says front. This will basically face your truck cab. This would be pointing towards the front of your truck which would make this locking handle on the drivers side of your truck bed. With this already installed onto your fifth wheel trailer you will slide this up on to the locking collar, torque down these jam nuts right here, and that would secure it into place. Your next step would be to slide this down over the gooseneck ball in your truck bed and then you can adjust the height to where you can see. Right on the back here there are three jam nuts that will tighten down once you get your height selected. Basically this would slide up and down to get you the correct height. One of the things I just wanted to show that youll see when I slide this up too far youll see a red line become exposed. You do not want that red line showing. Thats actually a warning that you do not want to hook it up that way. Anytime you adjust your height you want to make sure that red line is covered up. That it is not showing. If you see that red showing that means you need to lower your trailer until there is no red showing before tightening any of these jam nuts. Then the other feature I wanted to show you was this right here. You slide this to open; its stamped open here, and locks here. If you slide this to open then you would slide that down onto your hitch ball when youre doing your height adjustment. This extension handle is nice to use because you can be outside the truck bed and you can use either end. You can just reach in, move it to the lock position, move it to the open position. Once you move it into the lock position its locked over the gooseneck ball then you can use this other end, the hooked end, as a positive lock feature. Basically what youd do is theres a hole right here, youd slide this hook end from the inside out and then make the extension handle go behind and then just drop this down into your truck bed. It would actually lock this latch from going over to the open position so it is a positive lock feature. Now if you do want greater security you can run a padlock through here which I sold separately and thatll give you greater security to keep this latch from moving to the open position. That should do it for review on part number CAB-C5G.

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (100 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.


by: Joe Brutsche07/17/2014

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 JoeB 141891


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.

Rachael H - 7/29/2014


by: Lori R.06/08/2013

We bought a 2001, 29' Keystone Montana 5th wheel,pulled by a 2008, F-450 with a gooseneck ball in the bed. I researched between the typical 5th wheel mount and the gooseneck conversion. YOUR videos and website gave me the most information, was clear even for a newbe like me and sealed the deal. The dealership that I purchased the 5th wheel from had never heard of this product and wanted to charge me about $125 installation for theirs because of the need to drill and weld. I told them about your product, gave them the You Tube and link. I bought yours and had it delivered to my house. The dealer was amazed at the ease of putting the unit on the 5th Wheel hitch and didn't charge me anything for the labor. I think they will be ordering product from you! Anyway, we have used it for only 2 weeks, it seems perfect in every way. Thank you so much for the ease of ordering, understandable videos, great website and order followup. The only suggestion I would have is to explain the difference in purchasing an offset unit vs. straight (like the one I bought) I was a bit jumpy about not knowing specifically which one I needed and why. Thanks for the great work, I am extremely pleased and I have been telling everyone about your company!!! 83825


by: keith h06/17/2013

I bought a newer pickup that had a ball in the bed of the pickup. I purchased your convert-a-ball adapter, and used it last weekend for the first time. I was very pleased with the ease of installing it. my wife and I did it ourselves. It worked perfect. I feel very safe pulling our heavy rv, and using the convert-a-ball. Thanks for your great invention. It was as good as advertised, and more. 84930


We have had our convert a ball hltch for over a year,and have pulled with it thousands of miles. It has worked well, with no problems at all. We have gotten more than our moneys worth. thanks.

keith h - 07/07/2014



by: Dennis Adams11/01/2013

Good it was what I orderd just disapointed that UPS did not deliver it to my address, and not to my neighbor across the street. I was expecting the item on Friday and it arrived Thursday thanks 105988


it has worked wonderful for us. We got a pickup that can now haul both the camper and the boat So the hitch will be a great asset.It was easy to install and fit live a glove.Only downfall was UPS delivered it to our neighbors house and it took both of us to carry it to my house.

Dennis A - 11/04/2014



by: Andi E06/24/2013

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. 85769


by: Danny L06/01/2014

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 133617


by: Oscar Zacarias01/09/2015

Really happy with my purchase i made and a good investment. I recieved the fifth wheel to gooseneck adapter on time and next day i installed it on my fifth wheel trailer and it was very easy to do it. Instructions were plain and simple. If you dont have a buddy to help hold the adapter for you, i suggest you use a jack with a short 2x6 board to raise it in to position and begin tightneing the bolts. You do this by backing up your truck and you set the jack on the bed. I had no help so i worked with what i had... After installing it, and re inspecting everything, i took the trailer for a test drive on the dirt road and then on the paved road and it worked grea. Smooth ride, and very simple to lock and un lock the adapter from the ball. 168319


by: John W.03/31/2012

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. 35775


by: Todd G05/12/2014

I did receive my package today! Installed and ready for the weekend! Thanks so much for shipping it so soon after it was ordered! You guys at etrailer made my wife's Mothers Day alot more special! Thanks again! 130041


by: S. Fuller08/12/2013

This adapter was very easy to install. Was able to do it by myself in less than 30 minutes. Even thought you don't have to bolt this adapter to the hitch plate, the instruction say that a bolt up kit is available and free of charge. I would recommend this product. Also shipping from etrailer was very quick, and the price was right after shopping around. 94543


I have a 2014 5th wheel wanting to change to gooseneck, do allmost need to be also bolted down, all seem to have predrilled holes at the neck to do so. The king pin box is a Lippert 1621. What say you. Thanks

comment by: Marvin P - 10/03/2013


So long as the system is installed properly, the collar that slides over the pin and the adapater itself will not separate from the pin. The aditional bolt kit is not needed, but can be added if desired. The instructions included with the adapter have information on how to get the bolt kit.

Patrick B - 10/4/2013


by: DWAYNE SMITH01/08/2015

I AM VERRY HAPPY WITH THIS PRODUCT. DANA help me out very much with my order. This is my second hitch, i let the first one go with the old camper. only because i hated to see the new owner weld the cheap junk he brong over for his truck, also it didnt have a cushion. if you dont get the cushion your camper will beat you to death. i also love the idea that i can snap this on in a few min and go. i did drill and bolt my last one after a while only for extra security, so to say i will do this one also. (the biggest thing is i cant beleve this is so cheap) 168154


by: Danny Dixon09/30/2014

I ordered CAB-C5G hitch adapter on Sunday and was surprised that some one answered the phone when I called. I received the CAB-C5G adapter hitch on Wednesday and was again surprised but happy to get it that fast! It took very little time to install it on my 30 foot Puma Toy Hauler and it pulls great! I had bought a weld on hitch for another camper a few years ago and left it on the camper when I sold it. I can now keep my hitch adapter when and if I trade this camper for another one. I use the same truck for all my trailers and it's a gooseneck ball. 153635


by: jake01/18/2014

bolted on really easy and fast and you can switch back to a 5th wheel setup in 10minutes , you don't have to drill into your kingpin box witch every other adapter I looked at you had to do its really safe I work the oilfeilds I towed my camper 100 miles when I first got it most of it old log roads and it did great the camper dosnt wobble at all witch surprised me I thought it would compared to a 5th wheel set up, as always etrailer shipped it very fast and it was perfict when it arrived I've never had trouble with etrailer 114116


by: Dawn S.05/01/2012

Great service and quick delivery! Arrived on my porch three days after ordering. Needed to convert a 5th wheel camper to a gooseneck hitch, since we regularly haul a horse trailer. Installation took about 1/2 an hour and directions were clear and concise. Thanks for a quality product. Will highly recommend your site! 38916


by: Rick Truelove07/11/2013

Set up was as simple as advertised. I was able to do it by myself. Only problem I had is the new 2013 Ram 3500's, the 5th Wheel/Gooseneck factory pre-installed tow package the safety chains are too short. I will have to buy some new chains to fit. I have not towed with it yet, but will post another review after I do. 89036


Rick TDoes your RV or trailer ride level with the roadway? Are the rims on your rig 18?Im concerned about the adapter making the RV ride too high in the front. Dave

comment by: Dave H - 10/09/2013


Remember this adapter is adjustable, with a range of 12-16 inches. To determine if it will work for your right you can take a quick measurement. On a flat surface, park the 5th Wheel trailer and use the landing gear to get it level. Back the truck under it and measure from the top of the ball to the pin box base, the flat surface where the king pin is welded to. As long as that measurement falls within that range, you can setup the adapter to work with your rig.

Patrick B - 10/10/2013


by: Tom05/04/2014

This was a clean and simple design that is easy to install. The video and instruction sheet made the install easy. Once installed, the unit made hook up and towing easy. The frustrating part about this is the use of square head bolts. They require the use of a crowfoot wrench to adapt to a torque wrench. These are not easy to find, and they are relatively expensive. Manufacture the bolts with hex heads instead so that a standard 1" socket can be used. 128798


by: Jeremy D.11/18/2014

So far so good. Got the adapter as scheduled and installed it in about 30 minutes with the help of a friend and a pipe jackstand (just so I didn't have to hold it up the whole time. Haven't had a chance to road test it just yet, but it appears to be an extremely well built solution to not having the bed of my pickup full of a fifth wheel hitch. I'll try to update after I pull with it for a few hundred miles. 161684


by: John R.07/07/2012

I just bought a 30ft 5th wheel. I went to pick it up and It took more time to lift the jacks on the trailer than it did to install the gooseneck adapter. It pulled as good as any gooseneck trailer I have pulled. It only required an allen wrench and a cresent wrench to install. The instructions were simple and easy to follow. I could not be more happy with this product. 47047


by: Jim Clark03/11/2014

I ordered this product online and received excellent service, in a very timely fashion. The staff at e-trailer are 2nd to none and very professional with their business and service to their clients. I would highly recommend them to anyone in need of any product that they carry and distribute. I would and will use them again in the future as the need will surely arise. 120306


by: Dave B.07/21/2014

Absolutely outstanding product! I'll admit I was a little worried about using this type of adapter at first but my worried eased a bit when I saw how heavy-duty it was. My fears are completely gone now that I've towed my trailer over 400 miles on highways and off road through the mountains. It makes for a VERY solid, comfortable tow and I recommend it wholeheartedly. 142500


by: bud b11/09/2013

Great product! Install was quick and easy. Despite the weight I was able to install by myself in less than 20min. The adjustment is a nice feature as well. 106860


by: Bob S.01/27/2015

Shipped and received in a very short of time, put in on the trailer after I bought a torque wrench, which I needed any way, hooked it up to the truck and it fell right in place after a few attempts aligning it up, have a tool box in my line of sight, have not towed with it yet, seeing how it's winter here, but don't foresee any problems. 171421


by: Susan B09/03/2014

We ordered this and received it in 3 days. My husband and I installed it ourselves on a 1994 32 ft Coachman fifth wheel camper weighing 10,000 #s. The installation was just as the video showed. It is a really heavy and well made hitch. We are very pleased so far. It pulled just fine with our F350 crewcab duelly diesel. 149848


by: Rudy07/27/2012

I installed the convert a ball on my fifth wheel trailer, now I have a back and forth motion as I pull it, any suggestions.. 49587


I have the same problem. Instructions do not say to drill and tap, but I an considering trying this to see if it stabilizes the ride. Any other suggestions?

comment by: Greg S - 01/19/2013


It will take some extra work, but it may be worth removing the coupler and making sure the collar is installed properly and then re-install the coupler. If that does not resolve the issue, I would contact Convert-A-Ball.

Patrick B - 2/1/2013


I get that also usually on bumps.

comment by: Eric - 03/01/2013


Again, removing and verifying the collar install or re-installing it my help. Beyond that, a call to Convert-A-Ball may be in order.

Patrick B - 3/28/2013


by: randy e.06/17/2014

found the adapter to be as good as advertised after installing adapter and pulling trailer i feel that is actually better than i had hope it to be. i would buy this adapter again it i needed one again very pleased.everyone very friendly and helpful.order got on time no hassles so thanks again. 135855


by: Heather Jones02/26/2014

The customer service when buying on line is usually lacking BUT... this has been a great experience with etrailers! We have received no less than three emails letting us know every detail along the way. Thank you so much for that piece of mind that was unexpected but VERY appreciated! 117826


by: Gerald H08/24/2014

I needed a product that would attach to the goose neck ball in the back of my truck.. This product exceeded my expectation. The price is fantastic and I don't have to worry about a 5th wheel set up on my truck....Easy to install....Also the shipping and the purchasing was fast.... 148227


by: Henry S04/02/2014

Good Sturdy piece, I think it will be just what I needed and easy to use. I especially like the quick ordering and shipping service and appreciate the updating the type of shipping, that was a big +. Thanks for the service and the part I needed to get the trailer I bought. 123431


by: Tommy c09/02/2014

I have not had the chance to use the hitch adaptor that I have gotten from etrailer , but I am very happy with the look of the hitch and the speed at witch etrailer was able to get it to me, I have order a new truck and was expecting it this week but it has been delaided 149701


by: Shannon C.06/27/2014

Was not a big 5th wheel to gooseneck ball adapter fan, just didn't think they would hold up! But after seeing and installing (about 15 min) this product there is no doubt that it will do the job, no worries! Shipping was fast and customer service was awesome! Thank you! 137932


by: steve06/26/2014

product works well as expected, delivery was quick. i used this on my camper. the rod that came with it works for locking the coupler but i still had to crawl over the box side to hook up the safety chains......... but this is still a good quality american made product. 137738


by: Nick08/03/2008

Air ride is the way to go. We got this adapter for a 5th wheel camper, the air ride makes it less noticeable than our gooseneck and I didn't think that was possible. I would highly recommend, took less than 10 minutes to put on, easy release couldn't be any easier! 1129


by: Matt P.12/18/2011

After watching the very informative youtube video, we decided to purchase from etrailer. Our hitch arrived 5 business days after ordering, took 10 minutes to install and worked perfectly bringing our newly purchased 5th wheel trailer home. 28252


by: John S.06/10/2014

I was impressed with the prompt actions and delivery of the gooseneck adapter. It was installed and adjusted in about an hour. I haven't had an opportunity to pull the fifth wheel yet, but will try it out before our next trip in July. 135009


by: James01/23/2014

Really nice hitch simple to install 114588


by: Jeremy05/17/2012

it was easy to put on.It was a good thing i got the 12" to 16" so i could adjust it so it would not hit my tool box on corners, other than that i pulled the camper down the road and i couldn't even tell that it was there, good product 40833


by: Scott L01/24/2015

Great product it installed without a hitch (Ha Ha ) the installation video was very helpful and delivery time was great to California. the experts at etrailer were very helpful with selecting the right product for my application. 171104


by: Mack P.05/09/2014

What an incredibly efficient and easy adapter to install! Even the shop that installed it wanted to know where I got it from because it was much easier to install than their own. Of course, I told them! Thanks so much e-trailer! 129810


by: Shaun Beck06/08/2014

This adapter was hard to locate however Etrailer did a great job of not only having it but the shipping was nice and fast with easy installation directions! Thank you and in the future I will order other items from your store! 134704


by: Preston H.04/01/2014

Great web site good information in the video. Halve the price of other products of its type. easy to install. ordered an had it in two days. Can't wait to get it out on the road with it. That's for a great product. 123122


by: L. F.01/14/2009

Totally pleased, no problems. Fit well, very stable. Used now for over 20k miles. Mounted, then drilled & tapped kingpin box to make permanent. Been on lots of rough roads (bridges too), never loosened or cracked. 1511


by: Matt T08/26/2013

The adapter was very easy to install and adjust. This will allow me to test drive different trucks with my fifth wheel camper that have the gooseneck ball. The instructions were very easy to follow thank you 97031


by: Gary A04/16/2013

Product was easy to attach and worked like a charm. Had no issues and it seems to be of good quality. Would recommend to anyone that needs to pull a 5th wheel with a gooseneck. Glad I found this product. 76417


by: Roy V.08/17/2012

I recieved product 4 days after I ordered it, talk of fast service you'll are doing a great job. Hitch looks good and tough, I had it on in a couple of hours. Thanks for a great product. Roy Vecchio 52111


by: william haddock01/22/2014

By far the best customer service ever for online purchases. I had many questions and they answered them all. And when i placed the order i had a confirmation e mail before i hung the phone up. 114507


by: Robert07/17/2014

Product works great, easy to install. Took longer to arrive than I would have thought but all around great product, I would definitely recommend this to anyone looking for a 5th wheel adaptor 141912


by: john stull12/08/2014

Hi im john my product showed up 3 days after i ordered it..the costumer service was great n the receiver i bolt was well worth the money it was easy to install n works great..thanks again. 163737


by: Tommy10/06/2014

Puting on hitch was a easy. 10 min install would recomend. Only thing with hitch is on flatbed trucks u need a shorter locking rod. Easy fix trimmed dow the one that was sent. Good product 154671


by: Bob L.09/18/2014

The product worked exactly like they said it would. Only concern is it doesn't square to a 90 degree like a standard goose neck. Trailer still pulls great. I'd recommend this product! 151944


by: Chris B. nj06/20/2014

Product worked excellent first trip was 550 miles and no problem felt great pulled good no slop or wiggle would highly recommend instead of buying a 5th wheel set up easy install also 136724

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Ask the Experts about this Convert-A-Ball Gooseneck and Fifth Wheel Adapters
Do you have a question about this Gooseneck and Fifth Wheel Adapters?

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  • A gooseneck adapter that is designed for towing a fifth-wheel trailer, like the Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter, # CAB-C5G, is normally used when a person already has a gooseneck trailer hitch installed in the truck and needs to tow both gooseneck and 5th wheel trailers. These adapters are a good solution, but do not provide as nice a ride when towing a fifth wheel trailer. If your truck does not have a hitch installed I would recommend going with a fifth-wheel...
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  • Best Way to Tow Fifth Wheel Trailer With 2014 Dodge Ram 2500 With Factory Tow Prep Package
  • Of your two choices to carry your fifth wheel trailer with your 2014 Dodge Ram 2500 with the towing prep package, the less expensive option is the 5th wheel to gooseneck adapter. For a converting adapter I recommend the Convert-A-Ball # CAB-C5G. This adapter has a towing capacity of 20,000 lbs and a pin weight capacity of 4,000 lbs. This adapter has height adjust-ability of 12 to 16 inches and requires a 2-5/16 inch gooseneck hitch ball. If you determine you need an adapter with...
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  • 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...
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  • Which Gooseneck Adapter, Andersen Ranch Hitch, Colibert, Or Convert-A-Ball for a Recessed Gooseneck
  • The Convert-A-Ball Multi-Cushioned 5th-Wheel-to-Gooseneck Coupler Adapters are going to be your best choice if they will work with the recessed gooseneck hitch on your Hillsboro flat bed. I took some measurements and found that the coupler is overall 7 inches wide at the base where it sets on the hitch ball. From the front of the housing where the handle is located to the center of the hitch ball the measurement is 5 inches and then 2 inches to the back side of the coupler from the center...
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  • How to Measure to Determine the Correct 5th Wheel to Gooseneck Adapter
  • You will need to measure to determine how long the fifth-wheel to gooseneck adapter will need to be. Park your fifth-wheel trailer on a fairly level surface. Back your vehicle under the fifth-wheel trailer stopping when the center of the king pin is directly above the gooseneck hitch ball, measure from the top of the gooseneck ball on the truck to the base of the pin box on the trailer. This will give you the measurement needed to select an adapter. The adapters we offer range between...
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  • Does a 5th Wheel to Gooseneck Adapter Add Stress to a 5th Wheel Trailer Towed by 2011 Ford F-350
  • Using a 5th wheel to Gooseneck adapter, like the Convert-A-Ball Multi-Cushioned 5th-Wheel-to-Gooseneck Coupler Adapter, # CAB-C5G, can apply added stress to the trailer frame. You will need to contact Keystone to determine if the trailer can be used with a 5th wheel to gooseneck adapter. The biggest drawback will be a decrease in ride quality. If the trailer has an extended pin box or requires additional support, reinforcement of the trailer frame will be required and should be performed...
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  • 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...
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  • Choosing Between Convert-A-Ball and Reese High-Rise Gooseneck-to-5th-Wheel Adapters
  • If you were only planning on towing a fifth wheel trailer occasionally, but towing a gooseneck the majority of the time, going with the Convert-A-Ball Gooseneck adapter you referenced, part # CAB-C5G would be your best choice. Since you are planning on towing a fifth wheel trailer the vast majority of the time (maybe exclusively) the Hi-Rise Gooseneck-to-5th-Wheel Adapter would be the safer and easier to use alternative.
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  • Can the CAB-C5G 5th Wheel to Gooseneck Adapter be Used without Bolting or Welding to Trailer Pin Box
  • Yes, you can use the Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter, # CAB-C5G, without bolting it to the trailer king pin boxes. This is the best option for this coupler because it allows you to tow different trailers without the need for modification to the trailer pin boxes. This also makes the adapter fairly easy to move from trailer to trailer. One thing I would like to mention is that any of the offset adapters for short bed pickups, like part # CAB-C5GX1216, will require...
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  • What is the Minimum Clearance Between Truck Bed Sides and the Bottom of a 5th Wheel Trailer
  • A good rule to follow is to allow 6 inches or more of clearance between the sides of the bed and the bottom of the 5th wheel trailer to allow for dips and bumps in the road. To find the right 5th wheel to gooseneck adapter for your truck and trailer, there is a simple measurement you can take. First, back your truck into position as if you were hooking up your fifth-wheel trailer. Make sure that the truck and trailer are level. Next, measure from the pin plate (the bottom of the pin...
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  • 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...
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  • Is a Fifth Wheel to Gooseneck Adapter Safe for Towing a 33 Foot 12,000 Pound Fifth Wheel Trailer
  • The Fifth Wheel to Gooseneck Adapter, part # CAB-C5G, would be safe for pulling your 12,000 pound Fifth Wheel. The adapter is rated up to 20,000 pounds gross trailer weight and you are well under the limit. Just make sure your king pin box on your trailer is no longer than 30 inches from the center of the king pin to the center of the the mounting bolts. Adapters are not the best thing to use for continual use. A Fifth Wheel trailer is designed to use the movement of the Fifth Wheel...
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  • Towing Multiple 5th Wheel Trailers with a Gooseneck Hitch in a Flat Bed Truck
  • Your best option is going to be an adapter like the one you referenced, # CAB-C5GX1216. However, keep in mind that the offset does not move the pivot point back on the truck so no extra clearance will be gained when making tight turns. The models with the offset do have to be bolted to the pin box on the trailer. The regular straight models like # CAB-C5G do not. The length of your flat bed is also a factor. If the distance from the gooseneck ball to the end of the truck is greater than...
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  • Ride Quality and Safety when Using a 5th-Wheel-to-Gooseneck Adapter with a 32 Foot Trailer and F-350
  • The reason that ride quality suffers a bit with a gooseneck adapter like part # CAB-C5G, is because the fifth-wheel trailer pin box and framing are designed to be towed on a fifth-wheel hitch. The extra distance down to the gooseneck ball in the bed of the truck causes torque on the trailer chassis which in turn causes the pin box and trailer frame to flex, which contributes to what is know as chucking and bouncing. This issue can be worse with some trailers and hardly noticeable with others....
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  • 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.
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  • Will Fifth Wheel to Gooseneck Adapter CAB-C5G Work with a 33 Foot Holiday Rambler
  • The adapter will bolt attach to any standard Fifth Wheel king pin, but you will need to take some measurements to be sure it will fit. 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 adapter we carry is adjustable between 12 and 16 inches. Please note, that these adapters are not to be used in trucks with less than a 6 foot bed. Also note that these adapters are not meant to be used permanently....
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  • 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...
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  • 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.
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  • Fifth Wheel Trailer Bounce When Towing with a 2002 Chevrolet 2500 HD and Gooseneck Hitch
  • Trailer bouncing and rough rides are common complaints among customers that are towing their fifth wheel trailer with a gooseneck hitch and a gooseneck adapter like part # AM3100. Gooseneck adapters create extra distance between the king pin and trailer hitch and this extra distance creates torque on the trailer frame which creates the chucking and bouncing that you are referring to. Fifth-Wheel-to-Gooseneck coupler adapters are a good solution if you tow a gooseneck trailer and a fifth...
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  • Recommendations for Towing a 5th Wheel Trailer with a Ford F-550 Equipped with a Gooseneck Hitch
  • The gooseneck coupler you referenced, part # BD0289800300, is meant to be used as a coupler on a gooseneck trailer. Your best bet would be to use a gooseneck to fifth wheel adapter. We have several models to choose from. To determine the height needed, back the truck up as if you where going to hitch up to the trailer, making sure both truck and trailer are on level ground. Measure from the top of the gooseneck ball to the bottom of the trailer pin box. We also offer offset adapters...
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  • 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.
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  • Gooseneck to 5th Wheel Trailer Adapter Recommendations and Safety
  • There are actually two possible options for you. Depending on which gooseneck hitch you have, you may be able to use a gooseneck hitch to 5th wheel trailer adapter. Take a look at the Hi-Rise Gooseneck-to-5th-Wheel Trailer Hitch Adapter, # 9480. This hitch will fit in a Hide-A-Goose hitch by Draw-Tite or Reese. With this option, you will not need to make modifications to the trailer and the 5th wheel hitch can be removed when you need to tow a gooseneck trailer. The Hi-Rise is made...
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  • Concerns About Towing a 5th Wheel Trailer with a Dodge Ram 3500 Equipped with a Goose Neck Hitch
  • There are several ways to adapt a 5th wheel trailer to enable it to be towed with a truck that has a goose neck hitch installed. The best choice for you will depend on how often you need to change between trailer types. Some of the adapters that allow this flexibility will put more stress on the trailer frame than other types. Options are still somewhat limited for newer vehicles like your 2014 Ram. A fifth wheel adapter that bolts onto the king pin, such as Convert-A-Ball # CAB-C5G...
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  • Will Convert-A-Ball 5th-Wheel-To-Gooseneck Adapter # CAB-C5GX1216 Work on Ford F-450 And RV
  • As long as you have a gooseneck hitch on your 2011 Ford F-450 Super Duty truck, the Convert-A-Ball Cushioned 5th-Wheel-To-Gooseneck Adapter # CAB-C5GX1216 is a compatible fit for your RV. The coupler will bolt to your trailers king pin and will connect to the gooseneck ball. This item features a height differential of 12-16 inches. To find the correct size, you will need to back the vehicle under the trailer, measure from the top of the ball in the truck bed to the base of the pin box...
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  • Adapter to Tow a Gooseneck Trailer with a 5th Wheel Trailer Hitch on a Big Rig Tractor
  • For your set up I recommend an adapter that attaches to the gooseneck trailer. We actually have an FAQ article on this subject which I have linked for you. Given that your tow vehicle is a rig you will be looking at the adapters that fit in or replace the gooseneck coupler. Basically, these adapters fit in place of the regular gooseneck coupler and have a king pin on the ends to fit a 5th wheel hitch. I have included a link to the options. Some fit in place of the inner tube, like #...
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  • 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,...
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  • Will Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter Fit Recessed Gooseneck Ball on Flatbed
  • You can use the Convert-A-Ball adapter # CAB-C5G with your flat bed and gooseneck hitch that is recessed below that plate. The 16 inch square opening is more than enough for the adapter. The adapter has a pin weight capacity of 4,000 pounds and towing capacity of 20,000 pounds. If you need more capacity I recommend the Ranch Hitch # AM3100 and safety chains # AM3109. It has a pin weight capacity of 6,000 pounds and gross trailer weight capacity of 24,000 pounds.
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  • Which Convert-A-Ball Fifth Wheel To Gooseneck Adapter Will Fit A 2001 Dodge Ram 2500 4WD
  • The Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter -12 to 16 Inch Tall, part # CAB-C5G , will allow you to use the gooseneck hitch in your 2001 Dodge Ram 2500 4WD truck and tow the fifth wheel camper. For safe operation the required clearance between the overhang of the fifth wheel and the top of the siderails of your truck is 6 inches. To find the correct height coupler for your vehicle you will want to take a measurement. First, back your truck into position as if you were...
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  • How to Select the Correct 5th Wheel Trailer to Gooseneck Adapter for a 2011 3500 Chevrolet Silverado
  • I would recommend installing a fifth-wheel trailer hitch and custom install kit in your 2011 3500 Silverado with 6 foot bed for the best towing performance and ride with a fifth-wheel trailer. The parts needed for this installation would be the custom install kit, # RP50066-58, and a fifth-wheel hitch with slider, # RP30083. The slider unit will provide 12 inches of clearance when maneuvering the trailer in tight situations with your short bed truck. If your occupation, or some other...
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  • Using Fifth Wheel to Gooseneck Adapter on Receiver Hitch
  • The Convert-A-Ball Cushioned 5th Wheel to Gooseneck Adapter you mentioned, part # CAB-C5G is meant to convert a truck bed mounted gooseneck hitch for use with a fifth wheel trailer. It cannot be used with a trailer ball mounted to a draw bar installed into a rear mounted receiver hitch. Your best bet would be to install a fifth wheel hitch in your truck bed. You would want to choose a fifth wheel hitch whose weight capacity exceeds the fully loaded and ready to tow weight of your fifth...
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Do you have a question about this Gooseneck and Fifth Wheel Adapters?

Info for this part was:

Test Fit:
Joe V

Expert Research:
Michael L

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Video by:
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Updated by:
Adele M

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Updated by:
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