BMW Genuine Microfilter Set with Carbon Canister

• By using Genuine BMW Parts, you can be assured that your vehicle will be restored to the same exacting standards as originaland a perfect fit every time.
• Ridged and narrow, the Genuine BMW microfilter vastly reduces the concentration of contaminants and dirt particles in the car's interior
• The air you breathe inside the car up to eight time purer than the air outside.
• Fed through a water-repellent and chemical-resistant plastic polypropylene fleece, the air is filtered by combined mechanical and electrostatic means.
• Despite its compact external dimensions, the fleece contains a staggering total average of 200,000 square metres in surface area, the equivalent of a 5mm wide strip going right around the Earth.

Represented by part number 1 in the diagram.