BD Diesel 1045989 Exhaust Manifold

Stop exhaust manifold cracks in their tracks with the BD Diesel 1045989 Exhaust Manifold. Cast from high-silicon ductile iron, this pulse exhaust manifold features expansion joints that allow the manifold to expand and contract without cracking or exhaust leaks. As the name would imply, these manifolds are pulse-tuned to assist in combustion chamber evacuation and increase exhaust flow. The result is quicker turbo spool-up, reduced backpressure, increased power, and better fuel economy. Gaskets sold separately.