Due to the current COVID-19 pandemic, we are experiencing delays on shipping some products. ×

ATLAS 4" Aluminized Steel Down-Pipe Back Exhaust System

GM Diesel Trucks 02-04 V8-6.6L (td) LB7
Part Number: 49-04045-1B

MSRP: $1,189.13


  • 4" Mandrel-bent Aluminized Steel Tubing For Maximum Flow and Longevity
  • Quality OE Style Flange is Used for a Complete 360-Degree Sealing Surface
  • Includes a Free-flowing 8" Diameter X 12" Long Muffler for an Aggressive Sound
  • Uses Factory Mounting Locations, Providing Stability and a Hassle-free Installation
  • Includes dual side exit 6" matte-black stainless steel clamp-on tips with a laser-cut stainless steel aFe power plate
  • OE Style Bayonet Hangers are Used to Maintain a Stable Pipe Location
Read More

Interested in a new exhaust system for your Duramax? Check out the ATLAS DP-Back Dual side exit exhaust system by aFe. This 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 massive dual 6" high temp powder coated, wrinkle black 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 and Performance:
This ATLAS exhaust system is constructed of 4" mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.

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

Massive 6" Black Tips:
Finishing off the exhaust are dual powder-coated high temp black 304 stainless steel exhaust tips. The tips feature a drain port on the bottom to keep rust and corrosion away. Unique stainless steel laser-cut aFe Power logo plate are riveted on for an aggressive style.

All aFe exhaust systems are engineered and manufactured in our Corona, California facility.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2002-2004Chevrolet Silverado 2500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel
2002-2004Chevrolet Silverado 3500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel
2002-2004GMC Sierra 2500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel
2002-2004GMC Sierra 3500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel
Reviews (0)

Be the first to review this product


MSRP: $1,189.13

Add to Cart

Please wait...

Item has been added to your shopping cart

Keep Shopping

View Shopping Cart

Item has been removed from your shopping cart

Keep Shopping

View Shopping Cart