aFe POWER Large Bore-HD 5 inch 409 Stainless Steel DPF-Back Exhaust System for 2017-2019 GM Duramax 6.6L L5P w/ Polished Tip
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 EGT’s.
6" Diameter Polished Intercooled Tip:
Finishing off the exhaust is a 6" diameter, high luster polished, stainless steel slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser-cut powder-coated black aFe Power logo plate is riveted on for an aggressive style.
2017 Chevrolet Silverado HD 2500HD/3500HD V8-6.6L (td) Duramax
2017 GM Sierra 2500HD/3500HD V8-6.6L (td) Duramax
2017 GM Sierra 2500HD/3500HD Denali V8-6.6L (td) Duramax
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. (see instruction sheet for cut locations listed on all wheelbases applicable).
- Item Requires Shipping
- 40.0 lbs.
- W20.0000” x H14.0000” x L60.0000”
- Free Shipping!
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