Description
Large Bore-HD 5” 409 Stainless Steel DPF-Back Exhaust System for 2011–2016 Chevy & GMC 2500/3500 HD LML Duramax
Upgrade your LML Duramax with the Large Bore-HD 5” DPF-Back Exhaust System from aFe POWER. Engineered for maximum flow, durability, and performance, this system delivers superior horsepower, torque, and exhaust efficiency while maintaining factory-style fitment.
5” Mandrel-Bent 409 Stainless Steel Construction
Built from 5-inch mandrel-bent 409 stainless steel tubing, the Large Bore-HD exhaust provides unmatched strength, corrosion resistance, and long-lasting durability. Smooth transition bends reduce turbulence, improving horsepower, torque, and lowering exhaust gas temperatures (EGTs).
Direct Bolt-On Installation
This system installs directly to factory mounting locations using high-quality band clamps and OE-style bayonet hangers, providing a stable, hassle-free installation without cutting or modifications.
Leak-Free OE-Style Design
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360-degree sealing with OE-style flange and band clamps
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Bayonet hangers maintain precise pipe alignment during high heat and vibration for a consistent OE-style fit
Flow and Performance Benefits
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5” mandrel-bent tubing for maximum exhaust flow
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Reduces EGTs for improved engine longevity
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Smooth bends minimize turbulence and optimize power delivery
Fitment Note:
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Does not fit 2016 3500HD models equipped with NOX sensors
Compatible Models:
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2011–2016 Chevrolet Silverado 2500 HD Diesel V8 6.6L (td) Duramax
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2011–2016 Chevrolet Silverado 3500 HD Diesel V8 6.6L (td) Duramax
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2011–2016 GMC Sierra 2500 HD Diesel V8 6.6L (td) Duramax
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2011–2016 GMC Sierra 3500 HD Diesel V8 6.6L (td) Duramax
Emissions Compliance:
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CARB EO# not required
Proudly engineered and manufactured in Corona, California, the Large Bore-HD 5” DPF-Back Exhaust System combines high-performance engineering, aggressive flow, and reliable durability, making it the ideal upgrade for your LML Duramax truck.
