Stainless Steel Shorty Header Compatible With 84 to 91 BMW 325/325E/325I/325IS 6Cyl. Engine 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: 1.5" Port Shape: Circle Port ID: 1.4" Collector: 2.2" Outlet: 2.0" Main Piping Size: N/A O2 Bung: 1 EGR: N/A Air Injection: N/A Flange Thickness: 3/8"