DOUG THORLEY 4:1 Mid-Length Tube Headers, 1-3/4" x 3" (GM LS)

Get the most out of your LS powered sand rail by installing these quality 4:1 mid-length headers. The headers utilize standard 3-bolt flanges at the outlets so that you can fabricate your exhaust system to them in any way you desire. To make these headers last, we built them using industry leading 14-gauge steel tubing with 3/8" thick flanges. Topping all of that off, our headers come beautifully ceramic coated to greatly reduce surface temperatures and protect them from the environment. All 100% American made, and backed by our lifetime warranty. Install these headers today and feel your vehicle's true power potential!

Header Style: 4:1 Mid-Length Header
Material: Steel
Finish: Silver Ceramic Coated
Weld Up: No
Primary Tube Diameter (in): 1-3/4"
Primary Tube Gauge: 14 Gauge
Collector Attachment: 3-bolt Flange
Collector Diameter: 3"
Tuned: No
Flange Thickness: 3/8"
Bolts and/or Studs Included: No
Gaskets Included: No
Adapters/Reducers Included: No
Catalytic Converter(s) Included: No
Quantity: Sold as a Pair
CARB E.O. #: NOT LEGAL FOR STREET USE ON POLLUTION CONTROLLED VEHICLES
Warranty: Limited Lifetime to original purchaser