Below are links for the BMW 520d
BMW of UK
BMW of UK's website about the 520d. The website includes detailed
information and specs for BMW 520d. You can also build your own
BMW 520d and view the many images they have available in the
K&N Air filter - K&N Filter for the BMW 520d Part #E-2653.
K&N is the leader in aftermarket replacement air filters. All their
air filters come with a lifetime replacement warranty and are
designed to increase horsepower and acceleration while providing
excellent filtration for your BMW 520d.