Maximize exhaust flow in your 2017-2018 GM 6.6L Duramax L5P with the AFE 49-44085 Large Bore HD 5" Filter-Back Exhaust System. Constructed from 5" mandrel-bent T409 stainless steel, this exhaust system uses a high-quality band clamps and OE style bayonet hangers for secure fitment. Designed to utilize all factory mounting locations, this system installs installs easily with a quick, hassle-free installation. Each exhaust system includes massive 6" diameter polished stainless steel intercooled tips with your choice of polished or powdercoated black exhaust tips.
All systems use factory mounting locations providing stability and hassle-free installation.
High quality band clamps are included for a complete 360 degree sealing surface.
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 Intercooled Tip:
Finishing off the exhaust is a 6" diameter exhaust tip in your choice of a high luster polished finish, or black powdercoated slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless aFe Power logo plate is riveted on for an aggressive style.
- 5" Mandrel-Bent 409 Stainless Steel Tubing
- High Quality Band Clamps & OE Style Bayonet Hangers
- Utilizes Factory Mounting Locations For Hassle-Free Installation
Crew Cab/Short Bed, 6.6ft Bed, 153.7 Wheelbase
Crew Cab/Long Bed, 8ft Bed, 167.7 Wheelbase
Cutting the stock exhaust behind the DPF (Diesel Particulate Filter) is required for all cab configurations. All Crew Cabs applies to GM 2500/3500 Pickups. This system is not intended for use on Cab & Chassis applications.
49-44085-P - Polished Exhaust Tip
49-44085-B - Black Powdercoated Exhaust Tip