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USD 617.49 658.34
Part #:

AFE 49-04086 ATLAS Dual 4" Filter-Back Exhaust System

2017-2018 GM 6.6L Duramax L5P (All Crew Cabs)
Part #:
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The AFE 49-04086 ATLAS Dual 4" Filter-Back Exhaust System increases flow, performance and improves styling in your 2017-2018 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 ATLAS exhaust system is constructed of 4" mandrel-bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGTs.

Massive 6" 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.

  • Dual, Filter-Back Exhaust System
  • 4" Mandrel-Bent Aluminized Steel 
  • Your Choice Of Black Or Polished Exhaust Tips
Fitment Guide:
Crew Cab/Short Bed, 6.6ft Bed, 153.7 Wheelbase
Crew Cab/Long Bed, 8ft Bed, 167.7 Wheelbase
Cutting the stock exhaust behind the DPF (Diesel Particulate Filter) is required for some cab configurations. 
All Crew Cabs applies to GM 2500/3500 pickups only. This system is not intended for Cab & Chassis models.
Dual exhaust systems are not recommended for use on trucks with in-bed hitches. 

Product Options:
49-04086-B - Black Powdercoated Tips
49-04086-P - Polished Tips 


  • Manufacturer Name AFE
  • Shipping Weight 47.00 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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