Cummins (Cummins) is recalling certain ISX15 diesel engines, part number D103012BX03, and X15 diesel engines, part number D103016BX03. These engines have nylon fuel lines and were built with a banjo bolt containing an integrated single screen filter on the fuel pump. The fuel pump cooling circuit screens may become restricted by debris from filtration material causing the fuel line to burst when the vehicle is operated under certain driving conditions, such as on a long down-hill grade.