Downpipe designed for 2.0TFSI engine mounted in: AUDI A4 B7 QUATTRO Downpipe diameter: 3 "(76mm) Outlet diameter: 2.5" (63mm) Mounting flange: Original 4 screws TurboWorks Downpipe, made of 100% stainless steel. Downpipe dedicated to 2.0TFSI engine mounted in: AUDI A4 B7 QUATTRODiameter of the downpipe: 3 "Outlet diameter: 2,63" (63mm) Flange: Original 4-boltTurboWorks downpipe, made 100% of stainless steel.Downpipe designed for engine mounted 2.0TFSI in: AUDI A4 B7 QUATTRO Downpipe diameter: 3 "(76mm) Outlet diameter: 2.5" (63mm) Mounting flange: Original TurboWorks 4 screws Downpipe, made of 100% stainless steel.