Ball joint failure in your Duramax can become a common issue especially with the addition of larger, heavy offset wheel and tire packages. A failed ball joint can lead to uneven tire wear and overall sloppy steering. Mevotech has the answer. The Supreme line of ball joints feature superior toughness via a long-lasting sintered bearings, 180 SAE grease fitting, body knurling, locking ball joint nut, and extensive in house and 3rd party testing to ensure ultimate performance and strength. Mevotech Supreme ball joints are built for high-usage vehicles and feature a limited lifetime warranty.