Description
The aFe POWER ATLAS 5" Aluminized Steel DPF-Back Exhaust System is engineered for maximum flow, durability, and style on 2017–2019 Chevrolet Silverado HD and GMC Sierra HD 2500/3500 models with the 6.6L V8 Duramax turbo diesel engine. Designed to complement the factory exhaust system, this DPF-back upgrade improves exhaust flow, reduces backpressure, and enhances both horsepower and torque while maintaining a refined diesel tone.
Constructed from 5" mandrel-bent aluminized tubing, the ATLAS system delivers smooth transitions for low turbulence, improving exhaust efficiency, lowering EGTs, and increasing performance. It incorporates high-quality band clamps and OE-style bayonet hangers to ensure a secure, stable fit even under extreme vibration and high heat conditions. All factory mounting locations are used, providing quick, hassle-free installation.
Finishing the system is a massive 6" black stainless steel intercooled tip with laser-cut aFe POWER logo plate, adding an aggressive, race-inspired look while helping reduce exhaust gas temperatures at the tailpipe. Please note that cutting the stock exhaust behind the DPF is required for installation across all cab configurations.
Manufactured in Corona, California, the ATLAS exhaust system is a direct-fit, high-performance solution for diesel truck enthusiasts seeking enhanced flow, style, and durability.
Key Features & Benefits
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5" mandrel-bent aluminized tubing for maximum flow and durability
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6" black stainless steel intercooled tip with laser-cut aFe POWER logo
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OE-style bayonet hangers maintain secure pipe location under vibration and heat
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High-quality band clamps provide a 360° leak-free seal
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Smooth transition bends improve horsepower, torque, and lower EGTs
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Utilizes factory mounting locations for direct-fit installation
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Engineered and manufactured in Corona, California
Vehicle Fitment
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2017–2019 Chevrolet Silverado 2500 HD/3500 HD – 6.6L V8 Turbo Diesel (Duramax)
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2017–2019 GMC Sierra 2500 HD/3500 HD – 6.6L V8 Turbo Diesel (Duramax)
Wheelbase Fitment:
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Crew Cab/Short Bed – 6.6 ft bed, 153.7" wheelbase
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Crew Cab/Long Bed – 8 ft bed, 167.7" wheelbase
Installation Note: Cutting of stock exhaust behind the DPF is required for all cab configurations.
Emissions Disclaimer
This product does not require a CARB EO number.
