BDs Up-Pipes for the 1999.5-2003 Ford 7.3L PowerStroke replace the factory exhaust feed system (exhaust manifold to the turbocharger) which is prone to leakage due to the deterioration of the exhaust crush donuts.
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.