OBX-RS Stainless Header Fitment For 2001 to 2005 Mazda Protege-5 FS-ZE

T304 Fully Stainless Steel Dual T.I.G. welded construction for stronger hold  Accessories in photo are included  No instalLatitudeion instruction included in this kit, we recommend professional instalLatitudeion 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: 1.65" Port Shape: Oval Port ID: N/A Collector: 2.15" Outlet: 2.0" Main Piping Size: 2.0" O2 Bung: 1 EGR: 1  Air Injection: 1 Flange Thickness: 3/8"