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USD 418
Part #: AFE46-40012

AFE 46-40012 BladeRunner Ductile Iron Exhaust Manifold

2003-2007 Dodge 5.9L Cummins
Part #: AFE46-40012
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The AFE 46-40012 BladeRunner Ductile Iron Exhaust Manifold for your 03-07 Dodge 5.9L Cummins sets a new standard in manifold design. In recent testing, this exhaust manifold outflowed the factory exhaust manifold by up to 23%, improving performance and throttle response. The thick wall (0.25"" vs. 0.15"") T3 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. Gaskets Not Included. 

One-Piece Construction:
This manifold is constructed of durable cast ductile iron with a reinforcing rib for maximum strength between the port flanges. 

Dual Auxiliary Ports:
Two Exhaust Gas Temperature (EGT) probe ports are supplied for easy installation of gauges or testing equipment.

Hassle-Free Installation:
 All necessary hardware is included for a hassle-free installation.


  • One-Piece Design 
  • Dual Auxiliary Ports 
  • CARB EO# D-550-32
  • Ductile Iron Construction
Note: Gaskets and replacement manifold bolts not included.


  • MFG. Number 46-40012
  • Manufacturer Name AFE
  • Shipping Weight 24.00 lb.
  • Shipping Length 6 in.
  • Shipping Width 26 in.
  • Shipping Height 6 in.
  • Fuel Type Diesel
  • EO Number D-550-32
  • UPC 802959461372
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Most Popular Questions

Can this be installed on a stock truck? No other fabricating??
View Staff Answer 

The AFE 46-40012 BladeRunner Ductile Iron Exhaust Manifold can be used on a completely stock truck as a replacement of your factory manifold.