aFe Power Diesel DPF-Back Exhaust System for GMC Sierra 3500 HD Duramax 2011 - 2016

Interested in a new exhaust system for your LML Duramax - Check out the Large Bore-HD DPF-Back exhaust system by aFe. This system is constructed from 5" mandrel-bent 409 stainless steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations to provide a quick, hassle-free installation. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.Simple Installation:All systems use factory mounting locations providing stability and hassle-free installation.Leak-Free Seal:High quality OE-style flange and band clamps are used for a complete 360 degree sealing surface.OE Fit:OE-style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE-style fit that does not change with time.Flow and Performance:This Large Bore-HD exhaust system is constructed of 5" mandrel bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.Fitment Note: This item does not fit 2016 3500HD models equipped with NOX SensorEmissions Disclaimer: This product does not require a CARB EO# All aFe exhaust systems are engineered and manufactured in our Corona, California facility.