Pack 143.rar -

: Use a tool like WinRAR or 7-Zip to right-click the file and select "Extract to pack 143/" .

: Move the files into the mods or assets folder of your game directory. pack 143.rar

To provide an accurate guide, I need a little more context on what contains. In various communities, this specific filename often refers to very different things: : Use a tool like WinRAR or 7-Zip