Looking For Replacement For Dutton-Lainson Trailer Jack With Number 203960B On Label

Updated 06/16/2026 | Published 06/13/2026

Question:

Looking for a center mount trailer jack to fit a 2006 Ranger Boat Trailer. Current one is a Dutton 1,250 lb. A number 203960B is on the label. I can send you a picture if needed. Thanks.

asked by: James W

Expert Reply:

Hey James, thanks for reaching out. Yes, we do have a replacement for that. The 203960B number that you pulled from your jack is a label number. That label was used on two different trailer jacks with a 1250 lb weight capacity, sidewind jack # 6814 and topwind jack # 6817.

If yours is a sidewind, I recommend replacing it with the following:

- etrailer Boat Trailer Jack w/ Wheel - Sidewind - Swivel - 11" Lift - Zinc - 1.2K # MJ-1200B

Is your Dutton jack a top wind of sidewind? Do you have a preference either way?

expert reply by: Jesse M

etrailer Boat Trailer Jack w/ Wheel - Sidewind - Swivel - 11" Lift - Zinc - 1.2K # MJ-1200B
(click to enlarge)

James W.

6/16/2026

Yes it is a side wind. I will order the MJ-1200B trailer jack. Thanks!

Jesse M.

6/16/2026

@JamesW Awesome! The # MJ-1200B jack comes with it's own bolt-on bracket so install will be easy and you won't have to worry about it being incompatible with the old Dutton bracket. Feel free to reach out if you ever need anything else!