Mishimoto engineers know you love your Ford, which is why we've developed a line of Powerstroke performance parts, including a lower overflow hose specifically for the 2003-2004 6.0L Powerstroke. Mishimoto Powerstroke hoses are constructed from a combination of high-grade silicone and four layers of heat-resistant embedded fibers to provide the ultimate upgrade in reliability, durability, and performance. Mishimoto Powerstroke hoses retain factory fitment and offer a metal Y-fitting for increased temperature and pressure tolerance to keep your truck on the road and out of the garage. The Mishimoto 6.0L Powerstroke lower overflow hose, like all our Powerstroke performance parts, includes our signature Lifetime Warranty. Whether your Ford is stock or modified, trust Mishimoto and our line of Powerstroke performance parts to keep your engine cool.