Replacement Fulton Swivel Jack to Fit Weld-On Mount Already on Trailer  

Based on the picture you submitted the Fulton Marine Jack part #FXP100W0301 that you referenced would be exactly what you'd need and would bolt right up to the mount you have on the trailer frame.

The diameter of the Replacement Sidewind Handle #MJ-1000B-HD that you referenced is 1/2 inch. The radius of the handle is 7 inches.

I checked the Dutton-Lainson website but a complete engineering diagram of this item is not available, so I took a piece from inventory and measured the mounting hole spacing. All eight mounting holes on the Dutton-Lainson Sidewind Swivel Jack…

I measured the Replacement Sidewind Handles #MJ-1000B-HD and #MJ-1500B-HD and found that they both have a diameter of 1/2" and part MJ-1000B-HD measures 2" from the end of the handle to the center of the pin hole while part MJ-1500B-HD…

In order to remove a welded-on trailer tongue jack you will need to cut off the old welds to release the mounting bracket. This can be done using an angle grinder. The jack can then be replaced with another welded-on option such as the Fulton Marine…

Dutton Lainson makes a galvanized, USA-made swivel jack #DL22300 that can work attached to the side of the trailer tongue. This is a popular option for trailers that will see saltwater so it would work well for you. It has a tongue weight lifting…

The overall height of the Round Swivel Marine Jack w/ Wheel #MJ-1200B is 22-3/8 inches when fully retracted. It can swivel forward or back too.

The Dutton Lainson jacks are all made in America. I attached a link to a page that has all of the Dutton Lainson trailer jacks we offer. A very popular option is the part #DL22300 which is made in America.

The Dutton-Lainson #DL22300 is proudly made in the USA.

In order to find if the mounting holes on the Swivel Marine Trailer Jack with Caster Wheel - Bolt On - Sidewind - 10" Travel - 1,000 lbs #DL84MR will line up with your existing bracket you will need to take some measurements. See the dimensional…

For a similar sidewind trailer jack to your existing Shelby model jack, I recommend looking at the Dutton-Lainson Trailer Jack #DL22300. This is a great swivel jack that will bolt to any trailer tongue that is up to 3 inches wide and 5 inches tall.…

Sometimes a substitute part like a jack handle will fit on another brand of jack but we do not test items in this way since there are so many possible combinations. I did check the dimensions of an alternate handle, part #BD500171, and found that the…