Diesel Power Source 2-piece Manifold T-3 (Common Rail) for 2003-2007 Dodge Cummins 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 ports, two sizes, for pyrometer and pressure fitting. Made from Moly-Bendum Ductile Iron. Black High Temperature Coating. Comes pressed together, pressure tested and ready to install.