The ATS Diesel two-piece T3 pulse-flow exhaust manifold kit fits 2003–2007 5.9L Cummins engines and ships with gaskets and hardware. Built to replace the stock manifold assembly, this two-piece design supports turbocharger exhaust flow and simplifies installation by providing the required sealing and mounting components for Cummins 5.9L applications in those model years.
ATS Diesel 03-07 5.9L Cummins 2-Piece T3 Pulse Flow Exhaust Manifold Kit w/ Gaskets & Hardware