Get the Helper Springs you need for heavy hauling with your 2003-2004 Dodge 5.9L Diesel Made in different load capabilities to fit your application, spring kits install easily using u-bolts, or other hardware to secure it to your existing factory components. Most helper springs are located on top of the factory leaf spring pack and work in conjunction with the OE springs. The added support to the factory spring pack increases the load rating up to the stock gross vehicle weight rating. Shop today and upgrade your suspension with top-notch brands such as SuperSprings and Hellwig.