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Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Square - 30,000 lbs

Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Square - 30,000 lbs

Item # BD0289590300

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Gooseneck and Fifth Wheel Adapters

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Bulldog Gooseneck and Fifth Wheel Adapters - BD0289590300
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  • Gooseneck Trailer to Fifth Wheel Hitch
  • Replaces Inner and Outer Tubes
  • Bulldog
  • Adapts Trailer
  • Gooseneck Coupler Adapters
  • 30000 lbs GTW
  • No Offset
  • Adjustable Height
  • Square Tube
Pull your gooseneck trailer with a fifth-wheel hitch by installing this square king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique coupler and you're ready to tow. Call 800-298-8924 to order Bulldog gooseneck and fifth wheel adapters part number BD0289590300 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 - Square - 30,000 lbs. Gooseneck and Fifth Wheel Adapters reviews from real customers.


  • All Info
  • Reviews (2)
  • Q & A (12)
  • Videos (1)
  • Photos
  • Why etrailer?

Bulldog Gooseneck and Fifth Wheel Adapters - BD0289590300

Pull your gooseneck trailer with a fifth-wheel hitch by installing this square 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 pinch bolt 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 tube diameter: 4-1/2"
  • Inner tube diameter: 4"
  • Capacity: 30,000 lbs
  • Limited 3-year warranty


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.



0289590300 Bulldog Kingpin to Gooseneck Adapter - Square






California residents: click here


Video of Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Square - 30,000 lbs


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




Video Transcript for Bulldog Gooseneck and Fifth Wheel Adapters - Adapts Trailer - BD0289590300 Review

Today we're going to be taking a look at the Bulldog gooseneck to fifth wheel trailer coupler adapter. This unit allows you to pull your gooseneck trailer with a fifth wheel hitch simply by installing this square king pin adapter. Simply replace both the inner and outer tubes of the gooseneck with this unique system, this unique coupler. Both inner and outer tubes are included. The unique coupler fits the same as a gooseneck coupler that has inner and outer tubes. It's a very sturdy construction.

It does feature the load bearing pinch bolt and two set bolts, so all that's included. Again, durable construction. It's got that steel construction with a raw finish for easy welding. It is adjustable to fit your application. With it fully retracted, what we can do is take a measurement from the bottom of this plate to the top of the unit. I'm going to put a straight edge up there.

We're going to measure from the bottom of the plate to that straight edge. That's going to give us a measurement of pretty close to 23 1/8", maybe 23 3/16", right in that area. With the unit fully extended, that measurement increases to about 31 1/8" to 31 3/16", right in that area. That gives us a range of adjustment of 8". The outer tube on this unit's going to measure 4 1/2" by 4 1/2".

That's outer edge to outer edge. Inner tube is a 4" by 4" inner tube. Capacity for this unit is 30,000 pounds. Then the max vertical rating is 9,000 pounds. Please note that this coupler replaces both the inner and outer tubes. A professional will need to remove the original coupler and weld on the new coupler.

That's going to do it for today's look at the Bulldog gooseneck to fifth wheel trailer coupler adapter.


Customer Reviews

Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Square - 30,000 lbs - BD0289590300

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

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

- BD0289590300
by:

Product looks good, was delivered as promised. I specifically ordered the heavier unit for my trailer as the hitch is the weak point in the final connection. 421030



- BD0289590300
by:

I am well pleased with the quality of this product. I used it when modifying my gooseneck to a fifth wheel. 367740


2
2

Ask the Experts about this Bulldog Gooseneck and Fifth Wheel Adapters
Do you have a question about this Gooseneck and Fifth Wheel Adapter?


  • Recommended Square Tube Gooseneck to 5th Wheel King Pin Adapter
  • It sounds like you have a gooseneck like the Atwood Gooseneck Trailer Coupler AT75401. For an adapter to kingpin, I recommend the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Inner Tube - Square - 30,000 lbs # BD0289650300 or the # KPG5-Q25-IP. Both measure 4 inches outer diameter to fit inside a tube 4-1/2 inches outer diameter. Another option is to use the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Square - 30,000 lbs # BD0289590300. This will only be needed...
    view full answer...

  • Recommended 4-1/2 Inch Square Gooseneck-to-5th-Wheel Trailer Coupler Adapter
  • We do carry an adapter that would let you tow your gooseneck trailer with a fifth wheel hitch. You would need to order part # BD0289590300. This is a square king pin adapter that has an outer tube diameter of 4-1/2 inches. The weight capacity is 30,000 lbs and has an 8 inch range of height adjustment of 23-1/3 to 31-1/3 inches. This coupler replaces both the inner and outer tubes on the gooseneck. This is a weld-on adapter and needs a professional to remove the original coupler and weld...
    view full answer...

  • Availability of Inner Tube Gooseneck to Fifth Wheel Adapter that Measures 4-1/2 inch by 4-1/2 inch
  • I wish we did, but everything we carry has an inner square diameter of 4 inch by 4 inch. If the outer tube of your setup is 4-1/2 inch by 4-1/2 inch then the inner tube part # BD0289650300 could potentially be what you are looking for. You would need to measure the opening at the bottom of the outer tube though.
    view full answer...

  • Gooseneck Coupler to 5th Wheel Trailer Hitch Adapter Recommendation
  • You have some options in converting the gooseneck coupler on the trailer to be used with a 5th wheel trailer hitch. But, there is not an adpater that will replace the inner tube of the Bulldog Gooseneck Coupler, # BD028900. What you can do is replace the whole assembly, inner and outer tube, with Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter, # BD0289590300. This coupler fits the trailer the same as a gooseneck coupler with inner and outer tubes. It is adjustable. The only feature...
    view full answer...

  • Towing a Gooseneck Trailer with a 5th Wheel Trailer Hitch
  • All of the replace inner square tube adapters that we carry like # KPG5-Q25-IP are 4 inches square. But there is an option none-the-less. You could replace the entire coupler, inner and outer tube, with something like # BD0289590300. Removal of the old coupler and installation of the new one is going to require a qualified professional with experience in this sort of job. If this is not an option for you I recommend a different sort of adapter, one that fits in the truck. If your 5th...
    view full answer...

  • Gooseneck Coupler Recommendations for a Pace American Trailer with Gooseneck King Pin
  • It sounds like you have something like the part # BD0289590300 on your trailer now and you are looking for a way to convert it to a gooseneck hitch that is designed to couple to a gooseneck ball. Which the only inner tube gooseneck hitch that would fit your square 4-1/2 inch outer tube would be the # BD1289210300. A better solution might be to completely remove what you have on your trailer and install an entire new assembly like part # BD0289500300.
    view full answer...

  • What is the Exact Size of Bulldog Coupler Adapter # BD0289650300
  • I went out and pulled one of these Bulldog Coupler Adapter # BD0289650300 and the measurements are as follows: the outside dimension of the adapter is an exact 4 inches. The inside dimension is an exact 3-7/16 inches. Another unit that we have that is a tad bit larger is the Bulldog # BD0289590300. This has an outside dimension of 4-1/2 inches and an inside dimension of 4 inches.
    view full answer...

  • Availability of Gooseneck to 5th Wheel Hitch Adapter for 5 inch Square Outer Tube
  • All the Gooseneck to Fifth Wheel hitch adapters we offer have a 4 inch square tube, and wouldn't be compatible with your existing 5 inch square outer tube. If you wanted to go with the more standard 4 inch square inner tubing coupler/adapter, you could remove your existing outer tube and use the outer tube of the # BD0289590300 in its place. If you needed to tow a gooseneck, you can use the Bulldog Coupler inner tube, # BD0288660300. This coupler would be compatible with the outer tube...
    view full answer...

  • 30,000 lb 5th Wheel Hitch Recommendation for a 2008 Dodge Ram 4500
  • The Reese Low-Profile 5th Wheel Trailer Hitch, # RP30054, is the only fifth-wheel trailer hitch we carry at this time that is capable of towing up to 30,000 lbs total trailer weight. This hitch is compliant with V5 and SAE regulations when used within the limits set by the hitch manufacturer. This hitch has not been tested to meet DOT commercial regulations, and if used in a commercial application there may be warranty limits set by the manufacturer. You should also consult the owners manual...
    view full answer...

  • Can a 2007 Kenworth Big Rig Truck Tow a Gooseneck Trailer
  • There are several ways to adapt a trailer or 5th wheel hitch to tow a gooseneck trailer. But since the Kenworth is a large big rig type of truck the best option will be to use an adapter or adapters like the one you referenced # BD0289590300. You will just need to know the inner tube diameter, the shape, and if any of the trailers would need to have a different coupler welded on (like if one of the inner tubes only we carry would not fit). I have included a link to all of the adapters...
    view full answer...

  • Is a Gooseneck to Fifth Wheel Adpater With Outer Tube Diameter of 4-1/2 Inches Available?
  • There is a gooseneck to fifth wheel adapter with an outer tube diameter of 4-1/2 inches, the Bulldog # BD0289590300. This is a square tube, though there is also the Ram Gooseneck to 5th Wheel Trailer Coupler Adapter # KPG5-R25 which is a round tube with an outer tube dimension of 4-1/2 inches. I've added links to video reviews of these parts for you to take a look at.
    view full answer...

  • What is the Width of the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter # BD0289650300
  • The inside width of the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter # BD0289650300 is 3-7/16" while the outside width is 4". If the inside width of your outer tube is about 3-1/2" then this coupler adapter won't fit. All of our other square inner tubes have the same 4" outer diameter. You may need to swap out your whole coupler for an option like part # BD0289590300 which is the whole adapter; inside and outside tubes. You can lock the king pin with part # KPL and the inner...
    view full answer...


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




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Info for this part was:

Photos by:
Theodore B
Expert Research:
Michael L
Written by:
Lindsey S
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Laura H
Installed by:
Cole B
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Updated by:
Alexander C
Photos by:
Jeffrey L

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