Stainless Header Fitment For 2001 to 2004 Mazda Miata 1.8L DOHC NA8C BP-ZE By OBX-RS

T304 Fully Stainless Steel Dual T.I.G. welded construction 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) Primary Tube 1.5" OD Collector: 2.75" Flange Thickness: 3/8" Runner Wall Thickness: 16 Gauge (1.5mm)