B&W Defender Locking Gooseneck Coupler - Adjustable - Round - 2-5/16" Ball - 25,000 lbs

B&W Defender Locking Gooseneck Coupler - Adjustable - Round - 2-5/16" Ball - 25,000 lbs

Item # BWGNC4251

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Gooseneck Trailer Coupler

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BWGNC4251 - Round Tube B and W Gooseneck Trailer Coupler
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Product Images


  • Coupler with Outer and Inner Tube
  • 25000 lbs GTW
  • B and W
  • Round Tube
  • 2-5/16 Inch Gooseneck Ball
Heavy-duty gooseneck coupler latches and locks automatically. Built-in lock can be engaged when trailer is coupled and when trailer is unattached to help prevent towaway theft. Oversize, cone-shaped funnel eases hookup. Call 800-298-8924 to order B and W gooseneck trailer coupler part number BWGNC4251 or order online at etrailer.com. Free expert support on all B and W products. Guaranteed Lowest Price and Fastest Shipping for B&W Defender Locking Gooseneck Coupler - Adjustable - Round - 2-5/16" Ball - 25,000 lbs. Gooseneck Trailer Coupler reviews from real customers.


  • All Info
  • Reviews (2)
  • Q & A (3)
  • Videos (1)
  • Photos
  • Why etrailer?

B and W Gooseneck Trailer Coupler - BWGNC4251

Heavy-duty gooseneck coupler latches and locks automatically. Built-in lock can be engaged when trailer is coupled and when trailer is unattached to help prevent towaway theft. Oversize, cone-shaped funnel eases hookup.


Features:

  • Gooseneck coupler lets you hook your gooseneck trailer up to your tow vehicle
  • Cone-shape funnel makes it easy to guide ball into socket
    • Coupler engages as long as the ball is within 2" of the socket
  • Automatic latching mechanism for super simple hookup
    • Pull handle out and rotate up to open coupler
    • Line hitch ball up with coupler and drop trailer - internal latch automatically engages
  • Built-in lock provides excellent security
    • Mechanical shutter helps keep dirt and debris out of cylinder
    • 2 Keys included
  • Sturdy steel construction
    • Heavy wall tubing exceeds industry standards
  • Black powder coat finish is corrosion resistant
  • Includes an outer tube that welds onto the trailer
  • Made in the USA


Specs:

  • Ball size: 2-5/16"
  • Range of vertical adjustment: 11"
  • Inner tube diameter: 4"
  • Weight capacity: 25,000 lbs
  • Vertical load limit: 7,500 lbs
  • Limited lifetime warranty


With the Defender gooseneck coupler from B&W, you get the best of both worlds. Not only does this coupler make hookup an absolute snap, but it also defends against trailer theft. The built-in lock can be engaged when your trailer is hooked up to your truck, thus preventing uncoupling. It can also be locked when your trailer is not hooked up, preventing would-be thieves from hooking your trailer up to their gooseneck ball.


B&W Defender Locking Gooseneck Coupler

To begin the process of hooking up your trailer, unlock the Defender. Line the hitch ball in your truck up with the coupler. Because the funnel on the Defender is larger than the average gooseneck coupler funnel, you don't have to be exact when lining your tow vehicle up with your trailer. Just make sure that the ball is within 2" of the coupler's socket.


B&W Defender Gooseneck Coupler Oversize Funnel

Once you have the ball lined up with the coupler, lower your trailer. The funnel will guide the ball into the socket, and the ball latch will engage automatically. You will know that the latch is engaged because the handle will rotate counterclockwise and retract against the coupler's housing. When you confirm that the Defender is properly latched around your hitch ball, simply push the lock cylinder in. When locked, the cylinder will be flush with the coupler's housing.



GNC4251 B and W Defender Locking Gooseneck Coupler with Outer Sleeve - 25,000 lbs



BWGNC4251 Installation InstructionsInstallation Details BWGNC4251 Installation instructions



Video of B&W Defender Locking Gooseneck Coupler - Adjustable - Round - 2-5/16" Ball - 25,000 lbs


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




Video Transcript for B and W Gooseneck Trailer Coupler - Coupler with Outer and Inner Tube - BWGNC4251 Review

Today we're going to review part number BWGNC4251. This is the B&W Defender Locking Gooseneck Coupler with the outer tube included. This is a round design, has a 25,000 pound weight capacity. This gooseneck coupler will let you hook your gooseneck trailer up to your tow vehicle. On the very bottom here, it has a cone-shaped funnel which will make it easy to guide the ball into the socket. Basically, this coupler will automatically engage as long as the ball is within two inches of the socket. So I have a gooseneck ball here as an example and what will happen is ...

It's a cone shape so when the ball gets within two inches, it will automatically slide in and it will latch into place. I'll show you that in a minute here how it hooks up. This part also includes this outer sleeve which is used to . You would weld this out if you need an outer sleeve on you or if you don't have one on your gooseneck and you need to weld an outer sleeve on. It will come with this outer sleeve and the set screw right here and it has the hole for the pin. So once this is welded on to your gooseneck trailer, this would slide up into this.

This is the inner sleeve, it would slide up into there and you use your pin and clip through that hole there to get whatever height you need. Right here, this coupler has an automatic latching mechanism for super simple hook-up. Basically, you would just pull this handle out, lift it up and when you do that, you rotate it up to open the coupler then you just line the hitch ball up with the coupler, drop the trailer. The internal latch will automatically engage and lock into place and it also has a built in lock right here. You can see the lock still in with the key in it. If you just push that in after the ball is engaged and turn on a quarter of a turn, pull the key up, that handle is locked, so nobody can unhook it from your truck your trailer. Then if you just put your key back in.

Let me get the key back in there. Here we go. Turn on a quarter of a turn, lock will release and then you'll have access to open it up. There are two keys included with the lock. This coupler is made of a sturdy steel construction, has a heavy wall tubing on it which will exceed industry standards and the finish on it is a black powder coat finish which is corrosion-resistant. This part is made in the USA and it is designed to fit on a gooseneck ball of two and five sixteenths. It does have a range of vertical adjustments.

So when this slides up into the outer tube like this tube here and then you set it to what adjustments you need, you have a range, there's six holes right here. I'll pull up this clip and this pin. This is what you'll need to slide it through. When you get it lined into the adjustment you need, you just put the pin through and clip it on and that's your height. Basically, you'll have a range of 11 inches. So if I measure from the middle of this first hole down here to the middle of the top hole, it's 11 inches. So that will give you your vertical range of 11 inches. The inner tube diameter. This is the inner tube the outside diameter is 4 inches. It has a weight capacity of 25,000 pounds, has a vertical load limit of 7500 pounds and a limited one year warranty. Basically, I'll just put the spinning clip back in. Once you slide this up into your outer tube and find a right height you need, put this pin and clip in. Just go ahead and push the clip through. Now, when you're ready to hook up to the ball . Again, I got this ball here. I'm going to give you an example of how easy this will hook up. You just pull this to the edge so we can get an idea. I'm going to open up the latch. Now the latch is all open and ready for the ball and like I was saying before, you'll be able to see. If you get the ball close, it will actually funnel towards the latch. Then once you do that, once you get close enough, you'll see that ball will funnel in and when it gets into the latch . Let's just pull it out a little more, there you go, you can see it will automatically close. Just push in your lock, lock it and the handle won't come up in this ball. So it will lock your trailer to your truck. Then to remove it, just turn the key, quarter of a turn, it unlocks it. Then what you'll do is just pull up on this handle and twist it up and your ball will come right out. Very simple operation. Very neat, simple set up. That should do it for the review on part number BWGNC4251, the B&W Defender Locking Gooseneck Coupler with the outer tube included. .


Customer Reviews

B&W Defender Locking Gooseneck Coupler - Adjustable - Round - 2-5/16" Ball - 25,000 lbs - BWGNC4251

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

Heavy-duty gooseneck coupler latches and locks automatically. Built-in lock can be engaged when trailer is coupled and when trailer is unattached to help prevent towaway theft. Oversize, cone-shaped funnel eases hookup.

- BWGNC4250
by:

Review from a similar B and W Defender in Gooseneck Trailer Coupler


installed in minutes. It has been on trouble free for a year now. I am so happy with how it performed i bought a second one for the stock trailer. My wife travels with the truck and trailers constantly. No more complaints about pinched fingers or stuck slide couplers and as far as hooking up." Close" is really" close enough". 411726



- BWGNC4250
by:

Review from a similar B and W Defender in Gooseneck Trailer Coupler


Cool...great hitch, hasn't gotten my trailer stolen, good quality 190610


2
2

Ask the Experts about this B and W Gooseneck Trailer Coupler
Do you have a question about this Gooseneck Trailer Coupler?


  • How Does the B and W Defender Gooseneck Hitch Install on a Trailer
  • As long as you have an outer tube installed on your gooseneck trailer that is designed to fit an inner tube with a 4 inch diameter the # BWGNC4250 would install pretty easily on your trailer. If not, then you would want the # BWGNC4251 instead as this comes with the outer tube that would get welded to your trailer by a qualified welder. If you didn't want any adjustability with your gooseneck coupler you could always weld the # BWGNC4250 directly to your trailer. Also, the claim...
    view full answer...

  • Trailer Coupler Recommendation for Gooseneck Trailer to Convert from 3 inch Hitch to 2-5/16
  • You would need to replace the gooseneck coupler with one that has a 2-5/16 inch ball size. For that the B and W Gooseneck part # BWGNC4251 is a very popular option that would work well. It has an adjustable height tube and comes with a integrated coupler lock.
    view full answer...

  • B&W Defender Gooseneck Trailer Coupler Extended and Retracted Height Dimensions
  • You are correct, I spoke to my contact at B and W and they informed me that the # BWGNC4251 that you referenced has a total of 11 inches of adjustment. The inner tube measures 6.312 inches when retracted and 17.312 inches when fully extended. However we do not recommend towing with more than 12 inches of the trailer coupler exposed.The outer sleeve measures a total of 20 inches. Depending on where the outer sleeve is welded onto the trailer will determine the exact overall height.
    view full answer...


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Info for this part was:

Written by:
Lindsey S
Expert Research:
Jameson C
Photos by:
Jim W

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