Plutonium is a custom client for MW3 (and BO2/BO1) that fixes server browsers, patches exploits, and—crucially—.
If you're unable to find the official language pack or prefer to download from third-party sources, make sure to exercise caution and only download from reputable websites. Some popular third-party websites that offer game language packs include: Download Modern Warfare 3 English Language Pack Extra
Before proceeding, ensure your game version matches the pack. Using the wrong region pack will cause the game to crash on launch. Plutonium is a custom client for MW3 (and