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As many owners of 5.9L Cummins have come to find out, the factory exhaust manifold has a severe flaw...it cracks! The problem lies in the tendency of the exhaust manifold to overheat, causing it to ex ... read more
As many owners of 5.9L Cummins have come to find out, the factory exhaust manifold has a severe flaw...it cracks! The problem lies in the tendency of the exhaust manifold to overheat, causing it to expand, and then contract when it cools. All of this expanding and contracting takes its toll on the cast manifold, causing it to create heat-induced cracks. Fortunately, we have numerous solutions for this! We carry aftermarket, upgraded 3-piece and single piece ported exhaust manifolds designed to not only eliminate the potential of them cracking, but also allow for increased exhaust velocity. Especially for those running a larger turbo(s), this is critical to eliminate any bottlenecks of the stock manifold.
As always, if you have any questions about fitment or which manifold is right for you, do not hesitate to give us a call and we would be happy to assist.
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