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Pair this inner tube assembly with an existing outer tube for a gooseneck coupler that latches and locks automatically. Built-in lock can be engaged when trailer is coupled and when trailer is unattached. Oversize, cone-shaped funnel eases hookup.
Features:
Specs:
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.
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.
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.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
Don
4/13/2025
Very well Would buy again
John
12/11/2025
Great. Nice to have the integrated lock. Works smooth every time you couple and uncouple.
Warren
2/14/2022
Great coupler, better than the Bulldog that came on my trailer.
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Ed
5/31/2022
Everything is still great - works like a champ!