#AFE #TwistedSteel #Headers GM #Silverado/ #Sierra 1500 14-17 V8-5.3L/6.2L Features: Constructed out of 16-gauge, 1-3/4" mandrel-bent stainless steel tubing for unrestricted flow 4-to-1 mitered merge collectors eliminates flow-block turbulence seen on formed collectors Optimized tube lengths improve flow and performance 100% hand MIG-welded construction ensures optimal strength and durability Potential for up to +18 horsepower and +26 lbs. x ft. of torque when combined with aFe's y-pipe (P/N 48-44004) Also Fits Cadillac Escalade/GM Tahoe/Yukon/Suburban/Yukon XL (See list below) https://www.instagram.com/p/BoO5fdCDkH6/?utm_source=ig_tumblr_share&igshid=1j46kqclgeo1y