Replacement Inner Tube For 30k Bulldog Gooseneck Coupler
Updated 12/29/2025 | Published 12/22/2025
Question:
I have the 30k lb coupler P/N 0289500300 on my trailer. Will this tube work with my trailer?
asked by: Scott K
0
Expert Reply:
Hey, Scott.
The outer tube on your current coupler, part # BD0289500300, is made to work with a 4" inner tube. Since the Bulldog BX1 inner tube, part # BD1289050300, also has a 4" outer diameter, it will be the perfect replacement.
Is this the original coupler on your trailer?
expert reply by:
Gwendolyn Y
0
Bulldog BX1
(click to enlarge)
(click to enlarge)
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Scott K.
12/24/2025
Yes it is the original coupler.