BD 1045965-T4 Exhaust Manifold

6.7 Cummins T4 Exhaust Manifold upgrade is a must have to upgrade to a S300 or S400 turbo. Cast from high-silicon ductile iron this heavy-duty, multi-piece exhaust manifold has built-in expansion joints that allow for growth when heated rather than cracking like the stock application. Additional material in the turbo mount area as well as webbing between ports is also added for increased strength. Exhaust manifold gaskets sold separately.