The XDP Bellowed Up-Pipe Kit XD178 for your 1999.5-2003 Ford 7.3L Powerstroke is the fix for a common issue that robs power from your engine. Due to expansion and contraction, and extreme heat cycles, the factory installed "donut" gaskets designed to seal your factory up-pipes will begin to leak over time. When this happens, engine performance can be reduced drastically.
The XDP Bellowed Up-Pipes eliminate the troublesome "donut" gaskets and replace them with a durable steel crush gasket that will not blow out or leak over time. The Up-Pipes feature a bellowed design that allows for expansion and contraction without needing to rely on a finicky gasket.