Find the Rotating Assembly parts you need to rebuild the engine in your 2003-2004 Dodge 5.9L Diesel. Get the factory replacement you need or upgrade the internals on your engine build. You can reassemble your engine with connecting rods, pistons, bearings, and piston rings for your vehicle. YouÂ’ll find top-notch manufacturers like CP-Carrillo, Wagler Competition Products, MAHLE, and Clevite.