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Part #:

AFE 49-04045 ATLAS 4" Downpipe Back Dual Exhaust System

2001-2007 GM 6.6L Duramax (All Cabs & Beds)
Part #:
FROM 913.89
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The AFE 49-04045 ATLAS Downpipe Back Dual Exhaust System is constructed from 4" mandrel-bent aluminized steel tubing and uses high quality band clamps and OE-style bayonet hangers comes with a bolt-on bracket. This unit uses all factory mounting locations this provides for a quick, hassle-free installation with no modification necessary. Also included in this exhaust system are your choice of dual massive 6" high temp powder coated or polished exhaust tips, with laser-cut stainless steel aFe power badges. ATLAS exhaust systems are the perfect combination of performance, fit and value.

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

Leak-Free Seal:

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

Fits With Spare Tire:
This exhaust system fits perfectly without removing the spare tire.

Flow & Performance:

This ATLAS exhaust system is constructed of 4" mandrel-bent stainless steel tubing for maximum flow.

OE Fitment:
OE-Style hanger with bayonet tip are used to maintain a stable pipe location during high vibration and high heat conditions.

  • Direct Bolt-On 
  • Fits With Spare Tire
  • Down-Pipe Back Exhaust 
  • Aluminized Steel Construction
Exhaust Tip Finish
Polished 49-04045-P
Black 49-04045-B


  • Manufacturer Name AFE
  • Shipping Weight 98.00 lb.
  • Warranty Yes
  • Warranty Info 2 Year
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Questions and Answers

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Most Popular Questions

Does the afe 49-04045 fit on a long box regular cab?
View Staff Answer 

Per AFE, the system will fit all wheelbase trucks except cab and chassis applications.