... of SS, TIG welded, mirror polish 2.1.8mm thinkness for pipe,12mm thickness for flanges 3.Strict ... or SS304, 1.8mm tube thicknessBeautiful weldjoint, flat falnge and clean air holesTurbo Manifold in Mandrel Bend Piping with TIG WeldNew bolts ... -6940AUDI2.7L HEADERSSKP-7400AUDI 2.7 DOWNPIPESKP-8046AUDI 2.7L CATBACKSKP-5704AUDI 2.7L INTAKEPIPE Exhaust Manifold for AUDI 1.8L with K03 turbo flange