DOUG THORLEY 4:1 Shortie Headers, 1-1/2" x 2-1/4" (2004-2008 F-150 4.6L MOD)

These shortie headers are a fantastic way to work some extra horsepower out of your Ford. Plus, they are a much more economical way to replace the crack-prone factory manifolds than heading to your local dealership. This bolt-on installation will have you back out on the road in no time towing better and getting where you're going a little faster. All American made, and backed by our lifetime warranty of course!

Header Style: Shortie Headers
Material: T304 Stainless Steel
Finish: Silver Ceramic Coated
Weld Up: No
Primary Tube Diameter: 1-1/2"
Primary Tube Gauge: 14 Gauge
Collector Attachment: Factory Flange Connection
Collector Diameter: 2-1/4"
Tuned: No
Flange Thickness: 3/8"
Hardware Included: Yes
Gaskets Included: No, re-use factory gaskets
Reducers Included: No
Y-Pipe (Crossover) Included: No
Catalytic Converter(s) Included: No
CARB E.O. #: D-540-3 (2004-2007. F150, 4.6L W/EGR)
Warranty: Limited Lifetime to original purchaser