Choate Engineering Performance offers a range of high-performance parts for the 2003-2004 5.9L Cummins, including long block engines, full running daily driver engines, and short block assemblies. Their products feature precision CNC machining, upgraded pistons, balanced crankshafts, and high-quality components designed for increased durability and performance. These parts are ideal for those seeking to enhance their truck’s towing capabilities, daily driving performance, and overall engine reliability. The engines are built with careful attention to detail and come with a warranty for added peace of mind.