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USD 617.49 658.34
Part #:

AFE 49-04080 ATLAS 4" Dual Filter-Back Exhaust System

2016 GM 6.6L Duramax (Fits Crew & Extended Cabs with NOX Sensor)
Part #:
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The AFE 49-04080 ATLAS 4" Dual Filter-Back Exhaust System increases flow, performance and improves styling in your 2016 GM 6.6L Duramax. This system is constructed from 4" mandrel-bent aluminized steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations and comes with a bolt-on bracket that supports the driver side tailpipe. This provides a quick, hassle-free installation with no modification necessary. Add the finishing touch with your choice of polished or black powdercoated exhaust tips with a laser-cut stainless steel aFe power badges. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value. All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility

Single To Dual Exhaust Conversion:
This exhaust is designed to convert the standard single exhaust into an aggressive dual exhaust.

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

OE 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:
This Large Bore-HD exhaust system is constructed from 4"" mandrel-bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGTs.

Massive 6" Exhaust Tips:
Finishing off the exhaust are your choice of dual powder-coated high temp black, or polished 304 stainless steel exhaust tips. This tip features a laser-cut stainless steel aFe power badge for an aggressive style.


  • Filter-Back Exhaust System
  • Fits Models With NOX Sensor
  • 4" Mandrel-Bent Aluminized Steel  
  • Your Choice Of Black Or Polished Exhaust Tips 
  • Fits All Crew & Extended Cab Applications
Note: This exhaust system is intended for use on models with the NOX Sensor. Cutting is required for some cab configurations. All Crew & Extended Cab fitment applies to 2500HD/3500HD Pickups. This system is not intended for use on Cab & Chassis models.

Extended Cab/Short Bed, 6.6ft Bed, 143.5 Wheelbase
Crew Cab/Short Bed, 6.6ft Bed, 153.7 Wheelbase
Extended Cab/Long Bed, 8ft Bed, 158.1 Wheelbase
Crew Cab/Long Bed, 8ft Bed, 167.7 Wheelbase

Product Options:
49-04080-B - Black Exhaust Tips 
49-04080-P - Polished Exhaust Tips 


  • Manufacturer Name AFE
  • Shipping Weight 60.00 lb.
  • Shipping Length 49 in.
  • Shipping Width 13 in.
  • Shipping Height 23 in.
  • Warranty Yes
  • Warranty Info 2 Year
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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