Your BMW's air filter is intended to clean the air entering the intake before it gets into the engine. Over the course of thousands of hours of operation the air filter can become clogged up by dust and other debris which will significantly decrease air flow into the engine. In addition, a clogged air filter can also allow smaller particles through into the engine causing additional wear and tear. This OEM replacement filter will drop into place and fit just like the original.
Fitment Left side