BD Diesel 13-18 RAM 3500/4500/5500 6.7L Cummins Cab & Chassis Exhaust Manifold KitA fully divided pulse manifold made from high silicon ductile iron designed to withstand extreme temperatures and vibration. Precision slip joints allow the manifold to expand and contract, reducing cyclic thermal fatigue and greatly increasing manifold longevity. This kit comes with new gaskets, bolts, and spacers for maximum convenience and value. This Part Fits: Year Make Model Submodel 2013 2018 Ram 3500 Big Horn 2013 2018 Ram 3500 Laramie 2014