Don't remember the brand, but what you had was a cold plate with engine driven compressor
. This page from Seafrost shows a similar set up, and may be helpful.
There are 120 volt options available
Your old system may have been Freon based, and even if not your best option may be a whole new system. There are also 12 volt system using either a cold plate or evaporator.
You'd need an refrigeration
tech to know if what you have is useable or not.