Designed to offer maximum performance and a deep aggressive exhaust tone, the aFe Large Bore-HD exhaust system is for users wanting uncompromised performance and sound. The aFe Large Bore-HD exhaust system features smooth mandrel bends and large oversized pipes for maximum flow and optimum efficiency. Each exhaust system is constructed from high quality stainless steel for added performance and durability. High grade OE style 360 degree band clamps are included with every kit for an air tight seal and ensured performance. The aFe Large Bore-HD exhaust system uses factory mounting locations for easy and hassle-free installation. Extreme durability, optimum performance, and high quality design have made aFe Large Bore-HD exhaust systems perfect for users wanting premium quality, first-rate performance, and aggressive exhaust sound. All aFe exhaust systems are proudly made in the U.S.A.
Simple Installation:
All systems use factory mounting locations providing stability and hassle-free installation.
Leak-Free Seal:
High quality band clamps are included 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 409 stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGTs.
6" Diameter Black Intercooled Tip:
Finishing off the exhaust is a 6" diameter, black, stainless steel slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser-cut aFe POWER logo plate is riveted on for an aggressive style.
Wheelbases:
Crew Cab/Short Bed, 6.6ft Bed, 153.7" Wheelbase
Crew Cab/Long Bed, 8ft Bed, 167.7" Wheelbase
Note:
Cutting the stock exhaust behind the DPF (Diesel Particulate Filter) is required for all cab configurations. (see instruction sheet for cut locations listed on all wheelbases applicable).
Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).
All aFe exhaust systems are engineered and manufactured in our Corona, California facility.
- Performance Data Coming Soon!
- Constructed from 5" mandrel-bent 409 stainless steel tubing
- Uses a high quality band clamp and OE-style bayonet hangers for a secure fitment
- Utilizes all factory mounting locations to provide a quick, hassle-free installation
- Includes a massive 6" Dia. black stainless steel intercooled tip with a laser-cut stainless steel aFe Power badge Read More
Installation Notes:
Professional installation required.
Fitment & Application:
- 2019 GMC Sierra 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2019 GMC Sierra 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2019 Chevrolet Silverado 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2019 Chevrolet Silverado 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2018 GMC Sierra 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2018 GMC Sierra 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2018 Chevrolet Silverado 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2018 Chevrolet Silverado 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2017 GMC Sierra 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2017 GMC Sierra 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2017 Chevrolet Silverado 3500 HD HD L5P Duramax Turbo Diesel V8 6.6L
- 2017 Chevrolet Silverado 2500 HD HD L5P Duramax Turbo Diesel V8 6.6L
Brand | aFe Power |
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Part Number | AFE-49-44085-B |
Shipping Method | UPS/FedEx/USPS Ground |
California Prop 65 Warning | This product can expose you to chemicals that are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov |