Replace the old, cracked, or damaged exhaust manifold on your 1994-1997 Ford 7.3L Powerstroke and get your engine running right. For greater durability, most of the aftermarket exhaust manifolds offered are manufactured with high-silicon ductile iron. A failed exhaust manifold often cracks, or leaks, from heat cycles, age, and other conditions. This can result in boost leaks, or exhaust leaks that can reduce engine efficiency and rob you of power. Industry-leading brand such as Dorman, AFE, BD-Power, ATS and more are available.