Increased exhaust flow means improved torque, horsepower and lower EGT’s. That’s why your Duramax diesel needs the Large Bore Dual Side Exit down-pipe back exhaust system by aFe Power. This exhaust is built from 4" mandrel-bent 409 stainless steel tubing, including 2 massive 6" polished exhaust tips and a 24" Long muffler for optimum flow and an aggressive sound and looks. Large Bore exhaust systems are the perfect combination of performance, fit and value.
Installation is a Snap:
This Large Bore exhaust system includes an extension pipe to fit multiple cab configuration and uses factory mounting locations, providing stability and hassle-free installation.
Quality OE style flange and band clamps are used for a complete 360 degree sealing surface.
Massive 6" Polished Tips:
Finishing off this Large Bore exhaust are dual polished 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.
A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig.
Fits With Spare Tire:
This exhaust system fits perfectly without removing the spare tire.
Flow and Performance
Constructed of 4" mandrel bent 409 stainless steel tubing for longevity, the smooth transition bends result in increased exhaust flow and lower EGT's for improved throttle response and overall sound and performance.
Extended Cab/Short Bed, 6.6 ft. Bed, 143.5" Wheelbase
Crew Cab/Short Bed, 6.6 ft. Bed, 153" Wheelbase
Extended Cab/Long Bed, 8 ft. Bed, 157.5" Wheelbase
Crew Cab/Long Bed, 8 ft. Bed, 167.1" Wheelbase
All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility.
Year Make Model SubModel Engine Fuel 2002-2004 Chevrolet Silverado 2500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2002-2004 Chevrolet Silverado 3500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2002-2004 GMC Sierra 2500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2002-2004 GMC Sierra 3500 HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel
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