aFe Power is pleased to announce the release of the new ductile iron BladeRunner exhaust manifold for the 03-07 Dodge RAM Diesel Trucks L6-5.9L (td). In recent testing, this exhaust manifold outflowed the factory exhaust manifold by 23%, improving performance and throttle response. The thick wall (0.25" vs. 0.15") flange design increases strength, eliminating warping and cracking prevalent in the factory exhaust manifolds. The matched ports and merged runner design reduces exhaust backpressure, maximizing exhaust flow. Once you install this awesome exhaust manifold, you will feel quicker turbo spool up times, improved throttle response and increased performance.? Along with the exhaust manifold for the 03-07 Dodge RAM (P/N: 46-40012), we want to remind you of the availability of ductile iron exhaust manifolds for the 98.5-02 Dodge RAM Diesel (P/N: 46-40032) and 94-98 Dodge RAM Diesel (P/N: 46-40042).