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5th Wheel to Gooseneck Adapter Recommendation


Can I weld a gooseneck ball to the fifthwheel king pin?

Expert Reply:

It sounds like you want an adapter to be able to tow your fifth wheel trailer with a gooseneck hitch. If this is correct, the best option would be to replace your current pin box with a Reese Goose Box, like part # RP94622, which features an adjustable air bag and dual shock absorbers to create a smooth, cushioned ride and reduce stress on the trailer frame. The Goose Box is approved by Lippert, a major trailer frame and pin box manufacturer, and will not void their trailer warranties. Since Goose Boxes are made to fit specific pin boxes I would just need the make and model number of your current pin box to determine if we have one available for you.

Another option is an adapter like the Demco Recon, part # DM8550045. This has a lightweight base which attaches to the gooseneck ball in the bed of your truck and the head then installs onto the base to provide a fifth wheel hitch.

I have attached an article which covers the different styles of adapters that are available.

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I am trying the opposite keep the fifthwheel hitch in place and use the king pin with a welded gooseneck ball on it so i could to a gooseneck trailer.

Expert Reply:

In this case you would need an adapter like the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter, # BD0289640300. This adapter would allow you to keep the fifth wheel hitch installed in your truck but give you the capability to tow a gooseneck trailer. This adapter fits 4" round tube couplers and has a weight capacity of 25,000 pounds.

If by chance you have a square gooseneck coupler, you will need part # BD0289650300. With an outer tube width of 4", this adapter has a 30,000 pound weight capacity.

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