Overview Flowtech Headers are the perfect combination of quality and value. This shorty style header is popular for "LS-Engine" swap projects. They fit the popular 03-13 Chevy Silverado/Tahoe/Yukon V-8 6.0L, 2WD/4WD. For extra plug wire clearance on cylinder 6, use a 90 degree plug boot angle. See Accel part 170901C Features Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity Heavy duty 16-gauge tubing for increased strength and durability Smooth transition, 1-7/8” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response OE style 2-1/2” 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 Coated in high heat resistant black paint Headers are a must upgrade if you are using a cold air intake, cat-back exhaust system or tuner
