
DieHard is an American brand of automotive batteries and auto parts owned by Advance Auto Parts. It's known for its reliability and durability, especially in extreme weather conditions. In 2019, Advance Auto Parts acquired the DieHard brand from Transformco, which had purchased it from Sears. While Advance Auto Parts owns the brand and sells DieHard products in its stores and through Carquest, Transformco retains some rights to the brand through licensing and supply agreements.