DOUG THORLEY Tri-Y 4:2:1 Long Tube Headers, 1-3/4" x 2-1/2" (2014-2017 Silverado & Sierra 1500 5.3L V8)

This complete header kit makes huge increases in power output of your LS powered GM truck or SUV. The kit includes ceramic coated long tube tri-y headers and a complete performance y-pipe kit routing exhaust gases all the way to your exhaust system. Install these long tube headers today and feel your vehicle's true horsepower potential!

Application notes: Will fit 6.2L engines, but fabrication to fit y-pipe outlet to exhaust system is required.

Header Style: 4:2:1 Long-Tube Tri-Y Header
Material: Steel
Finish: Silver Ceramic Coated
Weld Up: No
Primary Tube Diameter: 1-3/4"
Primary Tube Gauge: 14 Gauge
Collector Attachment: 3 Bolt Flange
Collector Diameter: 2-1/2"
Tuned: No
Flange Thickness: 3/8"
Bolts and/or Studs Included: Yes
Gaskets Included: Yes
Reducers Included: N/A
Y-Pipe (Crossover) Included: Yes
Y-Pipe Inlet Diameter: 2-1/2"
Y-Pipe Outlet Diameter: 3"
Catalytic Converter(s) Included: No
Quantity: Sold as a Complete Kit
CARB E.O. #: NOT LEGAL FOR STREET USE ON POLLUTION CONTROLLED VEHICLES
Warranty: Limited Lifetime to original purchaser