This Wagner Tuning BMW F-Series N55 Performance Downpipe Kit 7/13+ is suitable for the following vehicles. BMW M135i(x) F20 / F21 model 07/2013+ BMW M235i(x) F22 BMW 335i(x) F30 / F31 / F34 model 07/2013+ BMW 435i(x) F32 / F36 model 07/2013+ Replacement for OEM BMW Part# 18328602882 Designed in CAD and then constructed using 1.4301 (SS304) stainless steel. High flow metal foil 300cpi catalytic converter* reduces the thermal load on the turbocharger. Significantly less back pressure resulting in increased torque and power. Perfect fit as a direct replacement for the OEM unit. 2 Lambda probe connections.