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ALL MANIFOLDS NOW COME WITH A BLACK CERAMIC COATING!!! Our 3-Piece Exhaust Manifold is both a great performance manifold and a factory replacement manifold. This 3-Piece Manifold has expansion joints to prevent cracking and warping so common with the stock manifolds. Built for the Dodge Cummins, 12-valve engines. Features Include: - Flow tested and balanced for increased balanced exhaust flow, while maintaining velocity for increased turbo spool up.
- Includes block gaskets, and two bolts.
- Drilled/Tapped for pyrometer and pressure fitting.
- Made from Poly-Bendum Ductile.
- Comes pressed together, pressure tested and ready to install.
Below shows the pictures of a stock manifold on a Cummins, which had shrunk so much from heat that after pulling one bolt out, the holes in the manifold were over 1/4 inch off from the head holes. The bolt wouldn't even go back in, and the manifold had to be cut off. It would have eventually broken either the manifold or head. It was replaced with our 3-Piece Manifold, and will never have that problem again. This truly shows the need for this three piece manifold. | 
