1. It sends cool air directly through the front grille of the car to the filter. It is effective, contributing to the enhancement of power and torque at 37.3 mph.

2. Avoid the reabsorption of heat into the engine compartment.

3. Very easy to install, you don't need anything.

4. Suitable for BMW E90 E91 E92 E93 E84.

5. Material: metal.