Recommended Square Tube Gooseneck to 5th Wheel King Pin Adapter

Updated 09/08/2017 | Published 09/06/2017

Products Featured in This Question

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

(390)

$252.24

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

(390)

$313.36

Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Square - 25,000 lbs

(831)

$187.67

Question:

Goose neck to 5th wheel. Got a Atwood square trailer coupler for goose neck with holes for adjustment need square ip 4 1/2 inch od with king pin

asked by: Mike S

Expert Reply:

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 if your 4-1/2 outer diameter dimension was on the inner tube assembly. Basically this will give you a 3 layer coupler instead of a two layer due to initial outer tube size. This would be rare, but possible.

expert reply by: Jason S