Stainless Steel Long Tube Header Fitment For 01 to 04 Chevy Corvette C5 Z06 LS1/6 5.7L 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: 1.68" Port Shape: Round Port ID: 1.6" Collector: 3.0" Outlet: 3.0" Main Piping Size: 2.5" O2 Bung: 4 EGR: 2 Air Injection: 0 Flange Thickness: .40"