This brushed finish, euro style exhaust center section fits flange to flange on the BMW E46 M3 and is a fantastic aftermarket piece to enhance the car. It is a direct replacement and you use original flanges to fit it- these originals do often rust so we include one flange free of charge to help you fit the exhaust. The center section is beautifully crafted from mandrel bent, 304 grade stainless steel and TIG welded pipework and sounds fantastic in combination with our VP/Topgear E46 Back Boxes (see related products). Diameter is 2.25i”. The gentleman in the video below purchased both parts for his E46!