6.4 Powerstroke AFE Ported Iron Exhaust Manifolds

Take your truck's performance to the next level with the AFE 46-40124 Ported Iron Exhaust Manifolds. These manifolds flow 5% better than the factory exhaust manifolds, improving performance and throttle response. CNC machined ports match the factory port openings for maximum exhaust flow, and the EGT ports are perfect for gauges or test equipment. The cast ductile iron construction is extremely durable, and up-pipe mounting hardware is included for a hassle-free installation.