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  1. Gooseneck and Fifth Wheel Adapters
  2. Bulldog
  3. Gooseneck Trailer to Fifth Wheel Hitch
  4. Replaces Inner and Outer Tubes
  5. 25000 lbs GTW
  6. Gooseneck Coupler Adapters
Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Round - 25,000 lbs

Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Round - 25,000 lbs

Item # BD0289580300
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Retail:$382.04
Our Price: $266.40
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Gooseneck and Fifth Wheel Adapters
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Shipping Weight: 59 lbs
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Bulldog Adapts Trailer - BD0289580300
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Pull your gooseneck trailer with a fifth-wheel hitch by installing this round king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique coupler and you're ready to tow. 1-833-496-1390 to order Bulldog gooseneck and fifth wheel adapters part number BD0289580300 or order online at etrailer.com. Free expert support on all Bulldog products. Guaranteed Lowest Price and Fastest Shipping for Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Round - 25,000 lbs. Gooseneck and Fifth Wheel Adapters reviews from real customers.
  • All Info
  • Reviews (307)
  • Q & A (0)
  • Photos
  • Why etrailer?

Bulldog Gooseneck and Fifth Wheel Adapters - BD0289580300

  • Gooseneck Trailer to Fifth Wheel Hitch
  • Replaces Inner and Outer Tubes
  • 25000 lbs GTW
  • Bulldog
  • Gooseneck Coupler Adapters
  • Adapts Trailer
  • Adjustable Height
  • No Offset
  • Round Tube

Pull your gooseneck trailer with a fifth-wheel hitch by installing this round king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique coupler and you're ready to tow.


Features:

  • Gooseneck-to-5th-wheel adapter lets you tow your gooseneck trailer with a 5th-wheel hitch
  • Unique coupler fits the same as a gooseneck coupler with inner and outer tubes
  • Sturdy, load-bearing pin and 2 set bolts included
  • Durable steel construction with raw finish for welding
  • Adjustable to fit your application


Specs:

  • Retracted height: 23-1/3"
  • Extended height: 31-1/3"
  • Range of adjustment: 8"
  • Outer diameter of inner tube: 4"
  • Plate dimensios: 13-7/8" long x 10-11/16" wide
  • Capacity: 25,000 lbs
  • Limited 3-year warranty


Dimensions of coupler plate

Note: This coupler replaces both the inner and the outer tubes. A professional will need to remove the original coupler and weld on the new coupler.



0289580300 Bulldog Kingpin to Gooseneck Adapter - Round




California residents: click here



Customer Reviews

Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Round - 25,000 lbs - BD0289580300

Average Customer Rating:  4.7 out of 5 stars   (307 Customer Reviews)

Pull your gooseneck trailer with a fifth-wheel hitch by installing this round king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique coupler and you're ready to tow.

by:

I bought a used trailer and wanted to replace the gooseneck coupler and redesign the frame connection. I had a number of goals in this replacement.
1) Extend radius of the frame neck. Was 73in increased to 90in.
2) Move frame connection to a lower area of tube.
3) Increase surface area frame contacts tube and add collars to tube for increased surface area for cross tube pin.
4) Convert from gooseneck to fifth wheel style connection but allow revert back if wanted.
5. Add cover over top of tube to shed water from entering tube sections. (4in PVC pipe cap with a little dremel work fits great)
6. Replace safety chains with weld on chain mounts to frame. Allow chain replacement without welding chain to frame.
7. Provide covered area for safety chains and wiring to avoid weather.

After much welding and fitting the new tube and post insert are finished and painted. I am very pleased with the quality of the items from etrailer and will be placing more orders in the future for trailer parts.




by:

Great workmanship, quality product, great investment….




by:

Wow needed it asap and they didn't let me down .product was perfect and customer service out standing can't wait to show the build thank you




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by:

Works great, came without paint.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


First trip the king pin was not welded properly and came off. I now have a damaged truck and trailer. I expect a full refund for the hitch. I also will be speaking with an attorney to see what my options are.


Comments
I will have our customer service team reach out to you. The coupler does have a three year warranty.
-- Etrailer Expert Jenny N - 12/06/2021


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Ordered on Friday afternoon and received the following Tuesday. Very simple installation. No longer have to crank the gooseneck up or down to connect to truck. Very satisfied with this product and the price was very reasonable.


Comments
Still loving it. Hook up is so much easier
Dean B - 03/28/2021


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Just like everything I get from etrailer professional help and quality products Great 5 th wheel adapter




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Excellent quality very well made fast delivery
Would buy again




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


My expectation when I unboxed the unit was that it would be a brand new unit. This unit looks like it had been made up and peicemealed from random gooseneck parts. I am reluctant to use this unit because I am questioning the workmanship of the welds.


Comments
I reached out to my contact at Bulldog and sent him the photos of your coupler adapter. Based on the photos, my contact confirmed that this coupler is per their prints for the product. This coupler has a raw finish so that the end user can paint it to match the trailer. Because there is no paint or primer on the coupler, surface rust can occur and would need to be cleaned off before painting.
-- Etrailer Expert Victoria B - 10/15/2019


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


I'm well satisfied with the adapter, shipping and overall experience with etrailer. The link you emailed to track the order worked great. The adapter seems very well constructed.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Great product. Very well built. I am a farmer and use it to hook up a goose neck trailer to our semi. We use the trailer to haul hay, machinery, or even cattle. What's great about this product is that you can move it from trailer to trailer. This adapter will fit in a gooseneck trailer with the pin running through the side or with the bolts on the front. Overall great product for the farm.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


I have ordered alot from etrailer and always been pleased , last week I ordered a 5th wheel conversion for my gooseneck trailer then went outside and literally cut my gooseneck hitch off , i then got a call from etrailer saying the part I ordered was backordered and was not available .while I was disappointed I was so glad called me immediately and was able to come up with a alternative . Great customer service ,I can not say enough great things about etrailer




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Excellent, interchanges with my gooseneck hitch so I can trailer either way depending on equipment




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Works great. Now I don’t have to use the tractor to pull the heavy B&W hitch with the pog system everytime I need to pull the gooseneck. I did have to drill the holes for the pin since the coupler was not a bulldog brand. Pulls better on the king pin than the gooseneck ball also.

Great price. Will shop again soon.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Bought this so my wife could load and unload our 30' flatbed easier. The gooseneck required her to climb into the bed and was hard for her to line up. This adapter installed in less than 60 seconds and has made her new career as a hot shot driver that much more enjoyable. I couldn't be more happier.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


It works well and makes the trailer hookup much easier! My only concern was with the box it arrived in as it was just rattling around in the box ripping holes throughout the cardboard, no damage to the item since it is literally bullet proof!


Comments
I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 12/13/2021


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Great product, fast shipping, excellent communication, definitely recommend these guys!!

We painted the square tube/king pin tube red and installed it. Works great, but there is not much of it to see in the pic. Take my word, well built & very heavy duty!!


Comments
Product works great, shipping was fast and installation was very easy. Quality built and very heavy duty. I would definitely purchase it again, thanks.
Tim S - 09/01/2018



by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


The bulldog gooseneck to 5th wheel adapter has saved me time. It make leaving the 5th wheel in my truck a reality. Now my travel trailer and equipment trailers are all 5th wheel connections. Back under to connect, simple. They tow smoothly with less jerking. It is bare metal, so paint to match.


Comments
A year later, painting the bulldog adapter was a wise choice. No rust has formed because I primed and applied a topcoat black finish of rust inhibiting paint. Ease of use, speedy trailer connection, and the stability the fifth wheel brings to my towing is unmatched. Highly recommend this for anyone interested in fifth wheel towing. The gooseneck connection in my truck bed hasn’t been used since I change the trailer connector and it’s been wonderful.
Travis - 08/29/2021


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


I ordered this product and received it 3 days later, I took about 1 hour to remove the gooseneck tube and install this one and get the height set for towing, removed it once again and painted it due to it being bare metal. So far this seems to be a quality product.


Comments
After a year’s worth of towing with this hitch I’m loving it, I’ve put many thousand miles on the set up and love the stability it adds to my tow. The product is very well built and I haven’t had a single problem with it. If your considering this product don’t hesitate its well worth the money.
Dale - 06/03/2020


by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


I shared pictures of trailer hitch, vin #, an explained the item needed.
I received conponent, the workmenship was real good, fit perfect into trailer
hitch. Thank you for being so helpful




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Product that I ordered was out of stock at the time so they suggested I ordered this part when I received the part the holes didn't line up with bolts in my trailer so I called about it and they said I can send it back but they refused to pay for shipping or give me a credit for shipping amount which is 45$.. sent me a replacement part AGAIN and the holes on it was drilled in diagonal totally unusable offered to pay for shipping on second part but not the first one even though it's not the one I ordered in the first place didn't want me to speak to a supervisor or manager.. definitely will not be using these people again....i paid 45$ to be ripped off




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


Fabulous, takes minutes to switch between, I prefer the true fifth wheel.




by:

Review from a similar Bulldog Kingpin Adapter in Gooseneck and Fifth Wheel Adapters


The adapter is really well built. The welds are great and the raw material was easy to paint. The problem I encountered was the fourth and lowest adjustment hole could not be reached due to the four pieces of triangular support stock hitting my Big Tex trailer neck tube before the hole would line up for the pin. So I had to take my cutoff wheel and trim 1/2” off those four pieces of triangular support metal so the adapter would go up further in the neck and the pin could be inserted. I hate working on new equipment but it’s easier than returning it and losing time.



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See what our Experts say about this Bulldog Gooseneck and Fifth Wheel Adapters

  • Can the Bulldog BD0289580300 be Bolted on to a Trailer?
    The outer tube of the Bulldog Gooseneck-to-5th-wheel adapter # BD0289580300 should be welded into place. With the outer tube only having 2 bolts, it will not have enough capacity to hold everything in place.
    view full answer...
  • Towing a Gooseneck Trailer with Two Different Trucks with 5th Wheel Trailer Hitches
    First, 5th wheel hitches accept an industry standard king pin size which is what is on the Bulldog gooseneck to 5th wheel adapter, # BD0289640300. So it will fit both 5th wheel hitches. Next, this is an inner tube of a gooseneck coupler. It will fit in place of a 4 inch diameter round inner tube on a gooseneck trailer. It does not fit over the existing tube. It is height adjustable with 4 height settings to compensate for the differences in height between trucks. You can also adjust the...
    view full answer...
  • Do I Need to Replace the Outer Tube on Gooseneck Trailer to Use Bulldog 5th Wheel Adapter
    The specific Bulldog Gooseneck to 5th Wheel Adapter, # BD0289580300, that you found is actually both the inner and outer tube. If you only need the inner tube, then you will want part # BD0289640300. This is just the inner tube that will give you the adapter without replacing the outer tube welded to your trailer frame.
    view full answer...
  • Adapting Gooseneck Trailer for Towing with a Single Axle Tractor Truck
    Without knowing the exact nature of your existing trailer and how the coupler attaches to the trailer, I can't prove a specific adapter, but I can show you what we offer. We offer many different adapters that would replace the coupler on your Gooseneck trailer if it has a square or round tube coupler. I've linked you to the adapters we offer. To choose the correct one, you'll need to know the inner diameter of the outer tube that the existing coupler slips into. Also, you'll need to know...
    view full answer...
  • Orientation Of Bulldog Gooseneck To 5TH Wheel Adapter On Trailer and Lube Plate Recommendation
    The Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Inner Tube # BD0289640300 is designed to be a replacement for their Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter # BD0289580300 which does have the pin hole located 15 degrees off center of your 90 degree coupler. If you were to drill new holes for your specific trailer that has the pin holes at 90 degrees this will cause the warranty to be void due to modification of the product by someone other than the manufacturer....
    view full answer...
  • Recommendation for a Gooseneck to Fifth Wheel Trailer Hitch Adapter for a 2006 Dodge Ram
    It sounds like you need a Gooseneck to fifth Wheel adapter like # KPG5-Q25-IP. This 4 inch outer diameter square tube will fit as an inner pipe on most standard gooseneck outer tubes. The overall length is 34-3/4 inches. We also have a round adapter that has an extend height of 31-5/16 inches, # BD0289580300.
    view full answer...
  • What is the King Pin Diameter on the Bulldog Gooseneck to 5th Wheel Hitch Adapter
    The standard king pin dimension for a semi-trailer is 2 inches diameter, where the fifth-wheel jaw wraps around the king pin. I went out to the etrailer.com semi-trailer on our lot, see link, and produced a short video showing both of the king pins in close proximity to each other for you to see. The king pin on the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter, # BD0289580300, is an industry standard 2 inch king pin and will work in a semi-tractor fifth-wheel hitch, as long as...
    view full answer...
  • How To Tow Fifth Wheel And Gooseneck Trailers With A Gooseneck Hitch On A 2006 Chevy Silverado
    If you are wanting to use the B and W gooseneck hitch that is in your 2006 Chevrolet Silverado you will have to use the 5th Airborne Premium Fifth Wheel Air Ride Coupler, part # 5AB-S500-700, with a Draw-Tite Hi-Rise Gooseneck to Fifth Wheel Trailer Hitch, part # 9480. The 5th Airborne standard king pin has a 21,000 lbs. weight capacity and will attach to your Fabex 520 pin box. The Draw-Tite Hi-Rise adapter will attach to your B and W gooseneck hitch and give you a fifth wheel hitch...
    view full answer...

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




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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Robert G
Expert Research:
Robert G
Employee John H
Expert Research:
John H
Employee Laura H
Updated by:
Laura H
Employee Alexander C
Updated by:
Alexander C
Employee Hannah L
Updated by:
Hannah L
Employee Andy C
Installed by:
Andy C

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