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Part #: AFE49-42004

AFE 49-42004 MACH Force XP 4" Turbo-Back Exhaust System

2004.5-2007 Dodge 5.9L Cummins
Part #: AFE49-42004
  3 Reviews
$627.94 $ $565.15
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  3 Reviews


The MACH Force XP exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs. This system is available in 4"" turbo-back with muffler, muffler delete-pipe and polished tip. MACH Force XP exhaust systems 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.

Aggressive Sound:
A free-flowing 24"" long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig. Muffler delete-pipe is also included for those who prefer a true race-inspired sound and maximum flow.

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 systems 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. Does Not Fit Cab & Chassis.

  • 4" Turbo-Back
  • Stainless Steel
  • Free-Flow Muffler
  • Muffler Delete Pipe Also Included
  • Direct Bolt-On Kit
  • Polished Tip w/ AFE Logo


  • MFG. Number 49-42004
  • Manufacturer Name AFE
  • Shipping Weight 83.00 lb.
  • Shipping Length 60 in.
  • Shipping Width 14 in.
  • Shipping Height 19 in.
  • Diameter 4"
  • Exhaust Exit Single
  • Exhaust Type Turbo-Back
  • Material T409 Stainless Steel
  • UPC 802959494301
  • Warranty Yes
  • Warranty Info 2 Year
  • Prop 65 WARNING: Cancer & Reproductive Harm -


Not long enough
Location: Western Washington
Didn't fit right. Needed to use muffler delete pipe to get the right length. Item says it fits crew cab long bed truck. Came up short. Once the install was complete sounds great good performance.
Exhaust review
Location: michigan
Very easy to install,fit together well. System has nice sound-not to loud. Seems like some horsepower gain also.
very impressed
Location: LaCrosse WI
everything fit very well. easy install. sounds great, no drone at all.

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Questions and Answers

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Most Popular Questions

Does this kit eliminate the cat ?
View Staff Answer 
The AFE MACH Force XP 409 Stainless Steel Exhaust System 49-42004 (Turbo-Back) will eliminate the CAT on the 04.5-07 Dodge 5.9L's.
Will this fit the mega cab?
View Staff Answer 

Yes it will – The system will fit all trucks except for the Cab & Chassis

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.