What is the Mounting Bolt Pattern of the etrailer Electric Trailer Jack?
Updated 10/07/2025 | Published 09/28/2025
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Question:
What is the mounting flange bolt hole center? I currently have a square tube jack and eould like to replace it with one of these. I prefer not to have to drill more holes in the mounting plate
asked by: Jimmy
Expert Reply:
Hey Jimmy, welcome back! The etrailer Electric Trailer Jack item # e55ZV has the standard A-frame jack mounting bolt pattern of 3" on center. The mounting bracket has slotted holes so there's some wiggle room too. The outer tube diameter is 2-1/4".
The etrailer item # e55ZV has a 5,000 lbs capacity and provides an 18" lift. The jack includes LED lights, a cover to keep it protected, and also comes with a limited lifetime warranty. In the event your trailer battery is dead there is an emergency manual crank included.
What happened to your old jack?
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Product Page this Question was Asked From
etrailer Electric Trailer Jack - Drop Leg - A-Frame - 18" Lift - 5,000 lbs
- Trailer Jack
- Car Hauler
- Enclosed Trailer
- Utility Trailer
- A-Frame Jacks
- Standard Grade
- 4001 - 5000 lbs
- Electric Jack
- 18 Inch Lift
- Bolt-On
- With Round Foot
- etrailer
more information >
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Jimmy
10/7/2025
I had a square jack and this one will fit in the hole but the bolt flanges will not work without modifying and making a flange adapter on my trailer. I am currently debating if I want to make an adapter plate or send this back