These are a clam shell style manifold that are CNC machined and then expertly tig welded together. The manifolds are standard 1018 mild steel they are specifically designed around the 6.7 powerstroke engines firing order and are 2000+hp capable.
*The manifolds are available custom ordered in 304SS. Available coated, head flanges with egt holes, and many other options. For any other options including bung or flange changes ,please call to order!
*Sold as a pair.