Diesel Power Source 3-piece T-3 Manifold 24 Valve for 1998.5-2002 Dodge Cummins Flow tested and balanced forsmooth, balanced exhaust flow, while maintaining velocity for increased turbo spool up Includes block gaskets, and 2 new bolts. Three, Drilled and Tapped ports, for pyrometer and pressure fitting, one even in the bottom. Improves mileage, horsepower, performance, turbo spool-up and lowers EGT's. Black High Temperature Coating Comes pressed together, pressure tested and ready to install