Looking for a high-quality piston that will help you maintain a factory performance in your 5.9 Cummins 2003-2004? Look no further than the Mahle 224-3674WR.020 Piston Set (6) With Rings. This top-of-the-line product is designed to meet the specific needs of your vehicle, and it's built to last with a factory construction. You can trust that this piston will help keep your engine running like new.