Catted Long Tube Header Fitment For 00 to 03 Chevy/GMC 1500 4.8L/5.3L By OBX-RS

T304 Fully Stainless Steel Dual T.I.G. welded construction for stronger hold Accessories in photo are included No installation instruction included in this kit; we recommend professional installation Manufacturer's Limited Lifetime warranty against manufacturer defects (Must fill out and return warranty card with a copy of the receipt and within 30 days of purchase date) Primaries: 1.75" Port Shape: Round Port ID: 1.6" Collector: 2.5" Outlet: 2.5" Main Piping Size: 2.5" O2 Bung: 6 EGR: 1 Air Injection: 0 Flange Thickness: .40"