2011-14 Ford F-150 5.0L 2WD/ 4WD Screw/ Scab Truck Headers. Constructed entirely of 304L stainless steel, these American-made headers have 1-7/8" primaries, 3" slip fit collectors, 3" catted leads and Y-Pipe that easily fits to the factory connection point.
All warranty questions, claims or otherwise should be directed toward the manufacturer, Dart.
