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The runners have been ported to improve velocity and evacuate the cylinders
This not only helps with engine braking
Direct Friction Allomatic
GTIN: 00019025017009
Exhaust Manifold Set PowerStroke 6.4L - Ford 2008-2010 F-250/F-350/F-450/F-550 1990 The runners have been portedThe 6. 4L manifold set is crafted with a heavy duty 0. 25" thick walled Hi Silicon ductile casting, this makes these manifolds thicker to combat cracking due to high exhaust temperatures. To maximize exhaust flow, computational fluid dynamics were used to optimize flow and exhaust port geometry. BD's exhaust manifold set is the perfect replacement for reliability, performance and peace of mind. Ports are gasket matched to maximize exhaust flow
US$ 2100.00
US$ 325.00
US$ 325.00
