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Part #: AFE49-42023

AFE 49-42023 Large Bore-HD 4" 409 Stainless Steel Down-Pipe Exhaust System

2007.5-2012 Dodge 6.7L Cummins
Part #: AFE49-42023
$441.75 $419.66
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The AFE 49-42023 Large Bore-HD 4" 409 Stainless Steel Down-Pipe Exhaust System for your 2007.5-2012 Dodge 6.7L Cummins is engineered to perform in the most extreme environments. This system is constructed from 4" mandrel bent stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. MACH Force XP exhaust race pipes are the perfect combination of performance, fit and value.

Installation is a Snap:
All systems use factory mounting locations providing stability and hassle-free installation.

Leak-Free Seal:

High quality OE style flange and band clamps are used for a complete 360 degree sealing surface.

Perfect Fit:

OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The Bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time.

Flow and Performance:

MACH Force XP exhaust race pipes are constructed of 4" mandrel bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGTs.

  • 409 Stainless Steel Construction
  • For Race / Off-Road Use


  • MFG. Number49-42023
  • Manufacturer NameAFE
  • Shipping Weight32.00 lb.
  • Shipping Length10 in.
  • Shipping Width90 in.
  • Shipping Height10 in.


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Questions and Answers

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Most Popular Questions

Does this mouth right to the turbo ? I am looking to replace everything from the turbo back and go into 8 inch stacks in the bed, I need something that replaces the down pipe, I already have a exhaust on the truck that deletes the dpf but the stock downpipe is still there and I want it gone
View Staff Answer 

Yes, the MACH Force XP 4" Turbo Down-Pipe “Race Pipe” mount directly to your turbo and eliminates both your catalytic converter and DPF.

If your looking for just the downpipe, then Click Here

Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.