Auto Exhaust Headers for 2000-2001 GMC YUKON 4.8L 5.3L and 1999-2001 GMC SIERRA 1500 2500

Description 100% Brand New, Never been used. Outlet Size: 2.5" Primary Tube Size: 1.75" Head Flange Thickness: 7/16" Outlet Flange Thickness: 3/8" Header features 8-2 light weight design. CNC machine flanges with TIG and MIG welded construction. Instruction is not included. Professional installation is highly recommended Application for: Chevy Avalanche 1500    2002, 2003, 2004, 2005, 2006    5.3L Chevy Silverado 1500    1999, 2000, 2001, 2003, 2004, 2005, 2006    4.8L, 5.3L(Except 2005 Chevy Silverado 1500 5.3l) Chevy Suburban 1500    2000, 2001, 2002, 2003, 2004, 2005, 2006    5.3L Chevy Tahoe    2000, 2001, 2003, 2004, 2005, 2006    4.8L, 5.3L（except 2001 Chevrolet Tahoe Base Sport Utility 4-Door 4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated） GMC Sierra    4.8L, 5.3L GMC Yukon    2001, 2002,  ,2005, 2006    4.8L, 5.3L GMC Yukon XL    2000, 2001, 2002, 2003, 2004, 2005, 2006    5.3L For Year and Model, Please Check Compatibility Package includes: Primary Tube Diameter inlet: 1 5/8 inch Primary Tube Gauge: 14 gauge as the picture shown