2026 Cadillac Optiq V Magnus Launch Edition Gets Matte Color aFe 46 40044 1 BladeRunner Ported Ductile Iron Exhaust Manifold. aFe 46 40044 1 BladeRunner Ported Ductile Iron Exhaust Manifold The aFe BladeRunner Ported Ductile Iron Exhaust Manifold for the popular 94 98 5. 9L Dodge Ram Cummins (12V) sets a new standard. This exhaust manifold outflowed the factory exhaust manifold by 25%, improving performance and throttle response. The thick wall (0. 25" vs. 0. 15") design increases strength and the merged runner design reduces exhaust backpressure, maximizing exhaust flow. You will feel improved turbo spool up times, improved throttle response and increased performance. One Piece Construction: This manifold is constructed of durable cast ductile iron with a reinforcing rib for maximum strength between the wall flanges at the ports. Dual Auxiliary Ports: Dual 1 8" NPT Exhaust Gas Temperature (EGT) ports are supplied for gauges or testing equipment. Hassle Free Installation: Hardware and port gaskets are included for a hassle free installation. Fitment Note: This item will not fit vehicles equipped with an EGR. Emissions Disclaimer: Some or all of the applications listed are 50 state exempt, please see CARB EO# for details. aFe 46 40044 1 Product Documents