Description
aFe ATLAS 5" Aluminized Steel DPF-Back Exhaust System
The aFe ATLAS 5-inch DPF-Back Exhaust System is engineered for 2016 LML Duramax-powered GM HD trucks, delivering improved exhaust flow, long-term durability, and aggressive styling while retaining all factory emissions equipment. Designed as a direct-fit upgrade, this system provides the ideal balance of performance, OE-quality fitment, and value.
Manufactured from 5-inch mandrel-bent aluminized steel tubing, the ATLAS exhaust system significantly reduces exhaust restrictions compared to the factory system. The smooth, constant-diameter bends promote efficient airflow, helping to increase horsepower and torque while lowering exhaust gas temperatures (EGTs)—making it an excellent choice for daily driving, towing, and heavy-duty use.
Secure OE-Style Fitment & Easy Installation
This DPF-back exhaust installs using all factory mounting locations, ensuring a stable, hassle-free installation with no unnecessary modifications. OE-style bayonet hangers maintain proper pipe alignment during high heat and vibration, preventing movement over time. A high-quality stainless steel band clamp is included to deliver a complete 360-degree, leak-free seal.
High-Flow Performance Design
The ATLAS exhaust system’s 5-inch mandrel-bent tubing allows exhaust gases to flow freely with minimal turbulence. This design improves exhaust scavenging and throttle response while reducing backpressure, resulting in improved overall engine efficiency and performance.
6" Polished Stainless Steel Intercooled Exhaust Tip
Completing the system is a massive 6-inch diameter slash-cut exhaust tip, crafted from high-luster polished 304 stainless steel. Integrated intercooling vents help reduce exhaust gas temperatures at the tailpipe, while a laser-cut stainless steel aFe POWER logo plate adds a bold, premium finishing touch.
Key Features & Benefits
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5" mandrel-bent aluminized steel tubing
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DPF-back design (retains factory emissions components)
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Improved exhaust flow, horsepower, torque, and reduced EGTs
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OE-style bayonet hangers for long-term fitment stability
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High-quality band clamp for a leak-free seal
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Uses all factory mounting points for easy installation
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6" polished stainless steel intercooled exhaust tip with aFe POWER badge
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Engineered and manufactured in Corona, California
Cab & Bed Fitment
Fits the following configurations:
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Extended Cab / Short Bed (6.6 ft) – 143.5" Wheelbase
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Crew Cab / Short Bed (6.6 ft) – 153.7" Wheelbase
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Extended Cab / Long Bed (8 ft) – 158.1" Wheelbase
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Crew Cab / Long Bed (8 ft) – 167.7" Wheelbase
⚠️ Fitment Note:
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This system only fits 2016 3500HD models equipped with a NOx sensor
Emissions Disclaimer
This product does not require a CARB EO number.
Vehicle Applications
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2016 Chevrolet Silverado 2500HD / 3500HD – 6.6L LML Duramax
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2016 GMC Sierra 2500HD / 3500HD – 6.6L LML Duramax
Upgrade your truck with the aFe ATLAS 5” DPF-Back Exhaust System for improved performance, OE-quality fitment, and aggressive exhaust styling—built to perform and engineered to last.
