Add to Cart Quick view SALE Rough Country GM Def Tank Skid (11-16 2500HD/3500HD) $168.95 $119.95 Give your diesel truck the protection it deserves with this DEF Tank Skid Plate. On newer model GM trucks the DEF tank extends below the frame of the truck making it highly vulnerable to damage from rocks and debris. Features: Protects DEF tank from... Compare Add to Cart Add to Wishlist