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  1. A-Frame Trailer Coupler
  2. etrailer
  3. 2-5/16 Inch Ball Coupler
  4. Weld-On
  5. 14000 lbs GTW
  6. Thumb Latch
A-Frame Trailer Coupler - Underslung - Thumb Latch - Black - 2-5/16" Ball - Weld On - 14K
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A-Frame Trailer Coupler - Underslung - Thumb Latch - Black - 2-5/16" Ball - Weld On - 14K

Part Number: CA-5335-B
In Stock
$49.76
A-Frame Trailer Coupler
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A-frame coupler welds to the bottom of your trailer's A-frame. Push latch down and slide forward or back to open or close ball socket. Black powder coat finish provides durability and rust resistance. 1-800-940-8924 to order etrailer a-frame trailer coupler part number CA-5335-B or order online at etrailer.com. Free expert support on all etrailer products. Great prices and Fastest Shipping for A-Frame Trailer Coupler - Underslung - Thumb Latch - Black - 2-5/16" Ball - Weld On - 14K. A-Frame Trailer Coupler reviews from real customers.
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  • Reviews (496)
  • Q & A (0)
  • Photos

etrailer A-Frame Trailer Coupler - CA-5335-B

  • 2-5/16 Inch Ball Coupler
  • Weld-On
  • 14000 lbs GTW
  • Thumb Latch
  • Standard Coupler
  • 50-Degree Frame
  • etrailer
  • Standard Grade

A-frame coupler welds to the bottom of your trailer's A-frame. Push latch down and slide forward or back to open or close ball socket. Black powder coat finish provides durability and rust resistance.


Features:

  • A-frame coupler lets you hook up your trailer to your tow vehicle
    • Provides connection point for hitch ball
  • Thumb latch makes it easy to clamp around ball
    • Push latch down and slide it back toward the trailer to open the ball socket
    • Push latch down and slide it forward to close
  • Underslung coupler mounts to the bottom of your trailer's frame
    • Great for tall RV frames
  • Sturdy steel construction
  • Black powder coat finish provides corrosion resistance
  • Built-in jack-attachment point allows for quick, easy mounting of round utility jack
  • SAE J684 certified
  • Weld-on installation


Specs:

  • Ball size: 2-5/16"
  • Overall dimensions: 13-1/4" long x 10-5/8" wide
  • Pin hole diameter: 5/16"
    • Minimum span needed for pin or pin lock: 7/8"
  • Weight capacity: 14,000 lbs
  • 1-Year warranty


CA-5335-B Ram A-Frame Trailer Coupler - Bottom Mount - Thumb Latch - 2-5/16" Ball - Black - 14,000 lbs





Customer Satisfaction Score:

Ratings & Reviews

4.8

496 reviews
Review sort icon
A-frame coupler welds to the bottom of your trailer's A-frame. Push latch down and slide forward or back to open or close ball socket. Black powder coat finish provides durability and rust resistance.

by:

Worked perfectly and received it in a good timely manner.



by:

So easy to deal with , product is excellent quality and fast. I live in Alberta Canada and there was 0 problems getting the product here with in the estimated time. I cannot say enough how impressed I am with this company.



by:

Great bang for the buck high quality no signs of stressing it hauls a box blade tractor around and skid steers



by:

Product is perfect! Very timely shipping as well.



by:

wasnt sure if my order would get here next day and it was here bright and early, making customers very happy



by:

Excellent customer service, great quality part
Thank you



by:

Great option for higher built trailers! Well made and very simple to install



by:

Well made. Great price. Fast shipping. Direct replacement for 1973 Avion.



by:

Product was received in a timely manner and appears to be of good quality. I would recommend etrailer.



by:

It's what I need. Will install it next month.

Ken profile picture

Ken

12/15/2024

Pulled RV about 4000 miles with new underslung coupler. Works great. Its so nice to be able to now lower the tailgate.



by:

It fits fine, You must have someone who knows or done the grind the old one off and the weld the new one on properly. The thumb latch operates much better than the old.



by:

This "underslug" lower coupler works great, it lowered my connection level which works great with my F-150. It has a 14,000 lbs. rating & a good locking latch.



by:

Had to miss our trip due to delayed shipping. Was in a pinch due to a failure. Specifically ordered from etrailer due to expected delivery date listed on website. After ordering the EDD changed by 5 days. Contacted customer service and they were unable to help.



by:

Worked out great!



by:

After my original coupler was damaged, I ordered this replacement. It was a perfect fit for the original. I had a welder come to my home and install it and I was on my way in an hour. Quick shipping by etrailer and just what I needed for my Jayco bunkhouse.



by:

Order came in on time and in new shape. Thank You!



by:

Thank you Jeremy H for helping us get this part overnighted to save our customer it came in just in time to save the day!



by:

Arrived in perfect condition
I had purchased
one of these in the past and installed and it came with a top plate
These couplers are great for replacements on already built trailers
Sure wish this one had come with the top plate, but overall are good couplers

Steve D. profile picture

Steve D.

1/2/2018

Just fine. This was to upgrade and replace an older coupler. Weld on was very simple



by:

This is a great product. My trailer height had me at the top of my 8"shank. I took this to my local welding shop and had it back that afternoon.



by:

Easy ordering and FAST delivery! Awes ome



by:

installed with welding and seems to fit perfect. Have not used it as of yet...but will soon!



by:

My RV trailer stands really tall and in order to tow it level my hitch was so high that it interfered with my tailgate. By cutting the regular coupler off the top of the frame and welding this underslung coupler to the bottom of my 6" frame, I gained about 5" of space. This allowed me to move my hitch ball down while keeping the trailer level. I can now open my tailgate without hitting the hitch.



by:

Perfect replacement. Had to grind off the paint to weld it on, but that wasn't much to do.



by:

This install is on a 2021 25W Artic Fox factory equipped with a top mount coupler and a 2019 Ford F250 with a built in step in the tailgate. As originally setup with a weight distribution hitch using a 12inch shank the tailgate would rest on the coupler latch (photo-1). I installed an 18inch Equalizer shank 90-02-4500. To determine the correct drop and rise use the Equalizer website. This shank gives me a 3 inch drop and a 5 inch rise. The 18 inch shank moved the trailer back 6 inch yet the camera in the tailgate rested on the coupler (photo-2). I then installed a bottom mount coupler CA-5335-B from etrailer (Photo 3, 4). This gave clearance for the tailgate to open. The tailgate clears the A-frame of the trailer by 5 inches (photo 5). I have found that it is easier to climb over the hitch when hooked up with the 18Inch shank (Photo 6). To finish the installation I installed 35 inch 18,800# chains and a 6ft breakaway cable. The cost with welding $445. To protect my trailer from theft I use a Proven Industries Hitch lock model 2516-J (Photo 7, 8).

Alan profile picture

Alan

1/4/2024

It has been a year since installing the underslung trailer couple. We have towed a lot of miles with good success. I am pleased with the truck and trailer setup and the tailgate clearance. I have no worries about damaging my tailgate or backup camera. I have had trouble releasing the ball when disconnecting the trailer. If there is tension on the hasp it will hold the ball. When this happens I have to move the truck forward or backward to relieve the tension.

Mike L. profile picture
Etrailer Expert

Mike L.

1/4/2024

@Alan We're happy to hear your coupler is working well for you, that's awesome!


by:

I bought this coupler because I had a top frame mount that required a very tall hitch. I brought it to a local
Welder to swap out and it’s working very well. It has completely solved my problem.


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See what our Experts say about this etrailer A-Frame Trailer Coupler

  • Ball Mount with Angle that Would Best Match Underslung Style Coupler
    Hey Miley, there aren't any underslung specific coupler balls available. The head of the underslung Blue Ox weight distribution systems does angle the ball back so best option might be a Gen-Y Glyder ball mount like the part # 325-GH-12005 that is cushioned but as it unloads it would tilt back like you are wanting.
    view full answer...
  • Can A-Frame Coupler Fit Old Airstream Trailer
    So long as your Airstream trailer has an A-frame, then yes, you can use the A-Frame Trailer Coupler - Underslung # CA-5335-B. There is no way for us to know what couplers fit any specific trailer, but so long as you have an A-frame then there won't be an issue with this one.
    view full answer...
  • How to Clean and Lubricate a Difficult to Open Trailer Coupler
    Hey John hopefully it just needs a good cleaning and lubrication. It would be noticeable if something was bent or broken and even then it probably wouldn't work at all. I recommend dousing your coupler in WD-40 a couple times. Open the latch and spray as much as possible inside the mechanism. Just keep working it over and opening and closing the latch while you're doing it. Coupler's like item # CA-5335-B aren't the easiest to operate because they get all kids of gunk and road grime in...
    view full answer...
  • What is the Measurement in Height on Underslung Coupler # CA-5335-B?
    Hello Jeff, Thank you so much for the diagram. I was able to get the measurement you requested, I am sorry I do not have dimensional drawing I can send. We didn't have any stock here at our Wentzville, MO location so I reached out to a friend at our Salt Lake City location and he said it is 3" tall at the spot you requested on the A-Frame Trailer Coupler # CA-5335-B. What kind of trailer are you putting this on?
    view full answer...
  • Will the BulletProof Hitches Coupler Lock Work w/ the Wider Lip on the A-Frame Trailer Coupler?
    Yes, it will! I went out to the warehouse and pulled both the A-Frame Trailer Coupler item # CA-5335-B and our BulletProof Hitches Extreme Duty Coupler Lock item # BPH96VR off the shelf. They were next to each other so that really helped. As you can see in the pictures below. I was able to slide the lock over the coupler's wider lip by angling it. I was able to secure it and I can tell you with 100% certainty that it is not going anywhere. If you have any additional questions feel free...
    view full answer...
  • Trailer Coupler Lock for Underslung Coupler
    Looks like you have a standard underslung thumb latch coupler like the part # CA-5335-B. The Master Lock coupler lock part # 2847DAT would fit this and work well.
    view full answer...
    Image 1 for
  • How Wide is the Lip Around Where the Hitch Ball Connects on the Underslung A-Frame Trailer Coupler?
    Hey Jeff! I went out to the warehouse and measured the A-Frame Trailer Coupler item # CA-5335-B. The lip around the end where the hitch ball goes measures 4-1/2" wide. What kind of trailer are you looking to install this coupler on?
    view full answer...
  • Difference Between Standard and Underslung B&W Continuum Weight Distribution System
    The difference between the standard and underslung B&W Continuum Weight Distribution System is the coupler style they are designed for. If you have a standard coupler like the # CA-5400-B mounted to the top of your frame then you need the standard Continuum # BW78FR. If you have an underslung coupler mounted to the bottom of your frame like # CA-5335-B then you need the underslung Continuum # BW88FR.
    view full answer...
  • A-Frame Coupler with Smaller than 50 Degree Angle
    The standard a-frame coupler degree is 50 degrees but we do have a 32 degree coupler with the part # DM15633-81 but the rear width of it is 9-7/16 inches.
    view full answer...
  • What is the Difference Between Blue Ox SwayPro Heads BXW4011 and BXW4012
    The difference between Blue Ox SwayPro heads # BXW4011 and # BXW4012 is the angle at which the trunnions are relative to the head. Head # BXW4012 is designed for underslung, also called bottom-mount, couplers so the bars are not at as a steep of an angle compared to the standard version # BXW4011. It is hard to tell without looking at them next to each other. An underslung coupler would look like # CA-5335-B and would be mounted at the bottom of the tongue rather than at the top like a...
    view full answer...
  • Is There Thumb Latch Repair Kit for Underslung A-Frame Coupler
    There is not a repair kit for the thumb latch of the A-Frame Trailer Coupler - Underslung - Thumb Latch - Black - 2-5/16" Ball # CA-5335-B. While I wish we had an option for you, if yours has busted you will need to replace the entire coupler.
    view full answer...
  • Trailer Hitch Coupler Storage Lock For 2023 Jayco White Hawk Travel Trailer With Underslung Coupler
    I do see that several of models for the 2023 Jayco White Hawk travel trailer use an Underslung Coupler # CA-5335-B. If this is what you have you will want to use the AMPLock Trailer Coupler Lock # AMP56FR. This is one of the best locks available as it uses a cast iron construction and rotating disc tumbler lock which is virtually pick proof.
    view full answer...
  • What is Difference Between Overslung and Underslung Trailer Coupler
    An underslung trailer coupler is one that attaches to the bottom of the trailer frame and an overslung one is one that attaches to the top of the frame. The Replacement Head for Blue Ox SwayPro Weight Distribution Systems part # BXW4011 is for trailers with an overslung mounted trailer coupler like part # CA-5400-B whereas the Replacement Head for Blue Ox SwayPro Weight Distribution Systems part # BXW4012 is for trailers with an underslung mounted trailer coupler like part # CA-5335-B.
    view full answer...
  • How to Measure the Angle of Trailer A Frame To Determine if a 50 Degree A Frame Coupler will Fit
    I would use a protractor, see photo, place the protractor on the edge of the inside of one side of the trailer frame and the other inside edge of the trailer frame should be parallel with the 50 degree line on the protractor. Another way to verify the angle is to measure the angle where the frame meets the cross member for the trailer bed itself. This angle should measure 65 degrees on each side, which will give you a 50 degree angle for the coupler. The standard dimension for trailer...
    view full answer...
    Image 1 for
  • Is There a Weight Distribution System that Will Fit an 8 inch Tall Trailer Frame
    I have a solution for you but the Reese Weight Distribution w/out Shank # RP66021 that you referenced won't work well for you due to how tall your frame is. So what you'll need to do is install an under slung coupler on your trailer like the # CA-5335-B which basically gives you a coupler that attaches to the bottom of the trailer frame so that you can use a weight distribution system designed for underslung coupler like the # BXW1003 which has a tongue weight range of 750-1,000 lbs. You...
    view full answer...
    Image 1 for
  • Weight Distribution Hitch For 2006 Jayco Jay Flight 31BHDS With Underslung Coupler
    We can get you set up with a weight distribution hitch for your 2006 Jayco Jay Flight 31BHDS, though the SwayPro # BXW2000 isn't rated correctly for that trailer. That hitch is for tongue weights between 1,500 lbs and 2,000 lbs, andthe '06 Jay Flight 31BHDS has a 9,000 lb GVWR, so your tongue weight is going to be in the 1,100 lb - 1,200 lb range. From my research it looks as if the trailer also has an underslung coupler, so what you need is the following: - Blue Ox SwayPro Weight Distribution...
    view full answer...
  • What Is the Difference Between the Blue Ox SwayPro Weight Distribution Systems BXW1003 and BXW1000
    The Blue Ox SwayPro Weight Distribution System part # BXW1003 is for trailer's with an under-slung coupler like part # CA-5335-B. If you have an over-slung coupler like part # CA-5400-B then you will need the Blue Ox SwayPro Weight Distribution System part # BXW1000 or you can just swap out the head, the Head for Blue Ox SwayPro Weight Distribution Systems part # BXW4011.
    view full answer...
  • What Is The Difference Between Weight Distribution And Underslung Weight Distribution Systems?
    Great Question. Underslung couplers on trailers look like the trailer frame is sitting on top of the coupler. For an example of what one looks like check out the etrailer.com A-Frame Coupler Underslung # CA-5335-B. I attached a picture of one for you to check out as well. I reached out to Blue Ox to get the specific differences and there is only one difference. In the design of the Blue Ox SwayPro Weight Distribution w/ Sway Control - Bolt On - Underslung, # BXW2004, they accounted for...
    view full answer...
    Image 1 for
  • Does Flipping a Single Axle Cause a Drastic Change in Tongue Height
    The tongue height of your trailer is going to increase in relation to the amount of lift gained from the Dexter Trailer Springs Over-Under Conversion Kit part # K71-385-00 for 3" axles or part # K71-384-00 for 2-3/8" axles. The amount of height you gain will be equal to the diameter of the axle plus the height of the leaf spring seat and stack. Basically, the over under kit raises the trailer's frame and since the coupler is attached to the frame, it is going to raise that as well. In...
    view full answer...
  • Replacement for a 14,000 lbs Underslung A-Frame Trailer Coupler
    With this being such an inexpensive part there is not a repair kit offered by the manufacturer for the thumb latch components of the A-Frame Trailer Coupler item # CA-5335-B. I wish I had an option for you but if your pin is no longer functional you will need to replace the entire coupler.
    view full answer...
  • Hard to Release Undermount Trailer Coupler from Hitch Ball
    I don't think you are doing anything wrong apart from jumping on the truck and even that isn't wrong it's just more fun to jump on a trampoline or in puddles. There are several reasons why the coupler could be having a hard time releasing from the ball. First, if there is tension on the ball from the truck/trailer being on uneven ground then that could be the problem. Pulling slightly forward or rearward to release the tension may be all you need to do. You also might be able use the...
    view full answer...
  • Adding Different Bolt-On A-Frame Trailer Coupler to Rusted Trailer in the Woods
    Well, that is a coupler, though it is in bad shape. It is a bottom mount or underslung coupler like # CA-5335-B. You can check the ball cavity to see if it is in working order but all that corrosion makes me think that using its coupler is not going to work. In order to use a regular coupler you will likely have to cut off that bottom mount coupler so a new coupler will be able to be lowered on the ball. The jack will also have to come out to be able to install a new coupler. As long...
    view full answer...
    Image 1 for
  • 2015 Jayco Jay Flight 27RLS Coupler Lock Recommendation
    I pulled up a picture of your 2015 Jayco Jay Flight 27rls and the coupler looks to be an underslung coupler like the part # CA-5335-B. Which then for a lock that is specifically designed to fit this type of coupler we have the part # AT89006 from Atwood that will work great. I attached a picture of this lock installed on a coupler for you to check out as well.
    view full answer...
    Image 1 for
  • What is the Hole Spacing to Mount a Jack to A-Frame Trailer Coupler CA-5335-B
    A-Frame coupler with jack hole # CA-5335-B has the industry standard mounting pattern which is 3 inches between holes on center for the back 2 holes and 2-7/8 inches apart on center from the front hole to either of the 2 back holes.
    view full answer...
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Ronnie R
Updated by:
Ronnie R
Employee Noah M
Updated by:
Noah M
Employee Amanda M
Written by:
Amanda M

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