DECAT BMW X5 30D XDRIVE F15 substitutes standard first catalyst, allows to essentially decrease resistances to the flow of exhaust gases for improvement of dynamic characteristics, increase of power and torque. For N57 diesel engine. Down pipe BMW X5 30d xDrive F15 2014- is entirely made of high-quality stainless steel by the means of the welding by TIG technique in argon medium. • Diameter 76mm., wall thickness 2mm; • Complete high-quality stainless steel (AISI 304); • Double-sided welding of flanges and most loaded joints; • Oxygen sensor ports by standard scheme; • 100% OEM fit, easy to replace factory part; • All the necessary fasteners are in set; This product can be also used for BMW with N57 diesel engine. It is recommended to wrap-around the downpipe with thermo-insulating tape before the use. The imitator of oxygen sensor will be possibly needed.