This downpipe is made for BMW 330d and 530d with M57 diesel engine and fits E90, E91, E92, E60 and E61. It is made of stainless steel and is designed for better exhaust flow than the original downpipe, which provides faster response and better utilization of the turbo. The downpipe is a direct replacement for the original part, but engine software must be adjusted after installation. Fits single-turbo M57 engines in the specified models.
