This Equal length stainless steel Cummins header is one of the best ways to improve the airflow over a restrictive cast log manifold. This exhaust headers is a direct replacement for stock cast iron manifolds. With flanges made from 5/8¿ cold rolled steel and header tubing from 304 stainless steel, these things will take a lot of heat without warping or cracking. Some of the benefits of this headers include: ¿ Separation of cylinder firing sequences and putting the exhaust pulse in a smooth flowing, blended system. This eliminates the confusion and disruption of exhaust gas flow found in stock, log style manifolds. ¿ Stock manifolds do not provide equal distance from each individual exhaust port to the turbo. The header tubing is as equal length as possible and provides a steady and timed pulse and flow velocity. ¿ Increase in turbo response time (50-60%) due to a more evenly distributed exhaust pulse flow. ¿ Decrease in EGT¿s (100-150 degrees when pulling) All header kits come with studs, washers, nuts, and exhaust manifold gaskets. I used this header on Project X diesel , and the results were 1048 hp with a single turbo, and small 90 hp injectors . Through extensive data logging the results were clear EGTs were reduced , spool up of the turbo was quicker , this header works

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