King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner tube is included.
Features:
Specs:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to take a look at the square inner tube goose neck to fifth wheel trailer coupler adapter. It has a 25,000 pound weight capacity. This goose neck to fifth wheel inner tube adapter will let you two your goose neck trailer with a fifth wheel hitch. The square inner tube right here is designed to fit most standard square goose neck outer tubes. The kingpin right here on the bottom of the plate slides in to your fifth wheel hitch. It is an adjustable height design. You can see the four hole design right here. This allows you to adjust it to fit your application.
It is a sturdy steel construction. Notice down here between the tube and the plate they have some nice, heavy gussening for support. It is in a raw finish. It is SAEJ2738 compliant. Few specs on this. We're going to do the width.
The width on this inner tube edge to edge is going to be right at 4 inches wide. The range of your vertical adjustment, or height adjustment, is going to be 8 inches. If we Mauser from the center of the lowest hole to the center of the highest hole you can see center to center that's your 8 inch height adjustment. Now the measurement between each hole center to center is going to be 2 and 11/16th's inches. The diameter of the pin holes are 7/8's of an inch.
The dimension on the square plate right here is going to be right at 10 inches. Just to show you the very bottom here. This kingpin is your industry standard, 2 inch diameter kingpin that will fit most all your fifth wheel hitches. The weight capacity on this adapter is 25,000 pounds. That should do it few the review of the square inner tube goose neck to fifth wheel trailer coupler adapter with a 25,000 pound weight capacity.
Average Customer Rating: 4.9 out of 5 stars (26 Customer Reviews)
King pin coupler allows you to pull your gooseneck trailer with a fifth-wheel hitch. The height easily adjusts to fit your application. Square inner tube is included.
I use this to pull my gooseneck flatbed with my road tractor. It works fine on both my trucks. 489637
This thing works. No hassles with hitching and I don't have to swap out my fifth wheel from the truck (which pulls the camper too) to use the equipment trailer. The fifth wheel is easier to hitch and disconnect than the ball hitch that it replaced. I see no disadvantages, except that my neighbors can't just borrow my trailer. 691672
My pickup engine went down being unable to pull a my gooseneck with a ball application I ordered your 4 in kinpin adapter for a gooseneck trailer as you can see in the pictures it pinned in perfectly with no trouble at all with your adapter im able to get my trailers moves while repairs are made and with it i'll just have to use the fifth wheel hitch for the pickup witch is much more easy to use than a goose ball 313920
Great company to work with and a very good product! 772258
I am very happy with the product. Is very good quality and fit the trailer perfect. And price was very fair. Website was also very easy to use. Keep it up. 749550
Excellent 739654
God really exist I praise he's name above all , because with out God been present in my line of work ,Today I may haven't get to know this great company, A company that supply this great part, for one of my equipment's. I was looking for this part for over a week , and here I'm today writing not to only thank God ,but also Thanks to the company who design this great unit, at a reasonable price, and the sales person who it help me . I'm very great full Respectfully Mr.Pagan 728444
Well built product. Only problem is the holes were too small for my locking pin. Just used a die grinder to open them up a little and fit great. I did paint it also, came bare. 711277
Product arrived quickly and was very good quality. 694350
Very good quality. The welding is superior. Fit perfectly. 607151
Thanks you!!! 584544
Heavy, well built. easy to install. Quick delivery, 522783
Installation photo 488895
Very fast and prompt service. Product was just what it said it was . 484207
Looks great well built but holes for adjusting are to small for my application. 452315
Product was exactly like the video showed. Could not be happier. Thanks etrailer for another great product. 442513
This gooseneck to 5th wheel adapter was an excellent decision, hooking up my equipment trailer is now as piece of cake. 438127
Fit right in hooked right up 435453
Nice product and fast shipping 397498
Quick shipping n part fit just like it should..thank etrailer 367192
The king pin adapter works great and I won't have to switch back-and-forth between gooseneck ball and fifth wheel hitch anymore. I found the best price at the etrailer.com . 339363
Ordering was quick and easy. Product does what it is supposed to do. Shipping was fast. 316619
Super great service. Fast shipping with tracking. Product was exactly as listed and is built very well 313952
Quality manufacturing. I have a 1989 gooseneck car hauler with a 4 1/2 inch OD square tube and I'm changing it over to a king pin. This is a 4 inch OD and it fits perfectly inside my existing tubing. The holes aren't the same size as my original 4 1/2 inch but that's an easy fix. I can't wait to be able to tow my 5th wheel and my car hauler without having to switch from king pin to gooseneck ?????? 299577
Opa - 09/27/2017Well made product, delivered on time & easy to order. All in all a very good experience. Thanks 292582
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