You must have every single part of the set (Part 1, Part 2, Part 3, etc.) in the on your computer. If one part is missing or has a slightly different name, the extraction will fail. Step 2: Extract Part 1
Since this is "Part 2," If you try to extract just this file, you will likely get an error saying "Unexpected end of archive." Step 1: Gather All Parts GF301122-ETS2-1.46.2.2-ELA.part2.rar
Once extracted, copy the resulting .scs file to your ETS2 mod directory: Documents > Euro Truck Simulator 2 > mod Compatibility Warning You must have every single part of the
Navigating Euro Truck Simulator 2 Mods: A Guide to the "ELA" Package GF301122-ETS2-1.46.2.2-ELA.part2.rar
This indicates the specific version of Euro Truck Simulator 2 the mod was designed for.