When I tried to download Arabic Language Packs for SharePoint 2016 via Microsoft download center, I couldn’t find Arabic option wlanguages drop down list as shown!
I also tried to search for “Download Arabic Language Packs for SharePoint 2016” with no chance.
Finally, I only changed the main English language pack link from en-us to ar-sa as shown below:
English Language Pack Link: https://www.microsoft.com/en-us/download/details.aspx?id=51492 Arabic Language Pack Link: https://www.microsoft.com/ar-sa/download/details.aspx?id=51492
In this hint, I tried to provide a direct download link for Arabic Language Packs SharePoint 2016 where all other Languages Packs are available.