Flowtech Headers are the perfect combination of quality and value. These shorty style headers fit the popular 2014-2015 Chevy/GMC Silverado/Tahoe/Yukon 5.3L & 6.2L V-8, 2WD/4WD models. Features: Mandrel-bent 409 Stainless Steel tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity Heavy duty 16-gauge tubing for increased strength and durability Smooth transition, 1-5/8 diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response OE style 2-1/2 ball and socket collector connects to factory exhaust head pipe with no cutting or welding TIG-welded, machined 3/8 header flange for a leak-free seal and maximum strength Premium aluminum header gaskets included Available finishes include Natural, Polished, High Temp Black paint, and Ceramic Coated finishes Popular shorty header for LT-Swaps