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USD 301.15
Part #: AFE49-44034

AFE Mach Force XP Turbo Down-Pipe 49-44034

2006-2010 GM 6.6L Duramax
Part #: AFE49-44034
★★★★★ ★★★★★ 2 Reviews
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The Mach FORCE XP turbo down-pipe is engineered to perform in the most extreme environments. This down-pipe is constructed from ceramic coated 3"" mandrel bent 409 stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, quicker turbo spool times and lower EGTs.


Utilizing the factory mounting locations providing stability and a direct fit.

Leak-Free Seal:

High quality OE style CNC machined flanges are used for a complete 360 degree sealing surface.


This down-pipe is ceramic coated inside and out. This coating developed by the aerospace industry is used to lower under hood temperatures by insulating the stainless steel tubing. The satin aluminum finish is chip and heat resistant up 1600 degrees."


  • MFG. Number 49-44034
  • Manufacturer Name AFE
  • Shipping Weight 6.00 lb.
  • Shipping Length 24 in.
  • Shipping Width 10 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • UPC 802959495803
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
2.5/5 Stars out of 2 Reviews
Don't waste the money
(Washington) | April 7th, 2019
I installed this product on a tuned 08 duramax that already had a complete straight pipe. I could not be more disappointed with how it turned out. The truck used to scream at wide open throttle, but now it just sounds like a loose fart. Fitment was a struggle as well. The bracket that bolts to the passenger manifold wasn't long enough and didn't reach the factory bolt hole. Literally the one bolt that I needed didn't reach. Also a side note your trans dipstick tube will not fasten to the two bell housing studs anymore so at best you'll have to zip tie it. In the next week or two I'll be reinstalling the factory downpipe as the "performance benefits" don't come close to justifying the time and money spent, not to mention the loss of sound from the exhaust.
a must
(washington) | June 6th, 2014
this is a must for a Dmax. if you have any upgrades to your truck buy this one next. the stock one for 01-07s are utter garbage. this woke my 06 up even with the stock exhaust. does take some time to install but well worth the money. their are cheaper ones than this but I like the fact that this one is coated inside and out and if you still want to wrap it you can

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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.