For Audi A4/ VW Passat Stainless Steel K03/K04 Turbo Manifold - B5 B6 Made of High Quality T-304 Polished Stainless Steel Alloy Material for Strength and Durability Tubular Design with Equal Runners to Ensure Equivalent Exhaust Flow Rate from each Cylinder TIG Welded CNC Machined Flange for Resistance against Cracking and Wearing Increase Engine Exhaust Output and Efficiency K03 / K04 Standard Configuration Outlet