Pro Fab Performance Cast Flow series Manifolds and 2" Stainless Steel up pipes for 2001-2016 Duramax. Passenger side up pipe is built to clear a conventional down pipe on single turbo applications. If you have Twin Turbo's, you want to purchase the Extreme Cast Flow Kit.
-LMM trucks require a coolant line relocation fitting.
-Gaskets sold separate
-2015+ require a small spot on the passengers side manifold ground for clearance to the frame
-No EGR Provisions, Competition Use Only.