DNA air filter element

This filter features DNA®’s advanced FCd (Full Contour design). Installation of this DNA Air filter is very easy; simply follow the installation instructions included in the BMW workshop manual. The filtering efficiency is extremely high at 98-99% filtering efficiency (ISO 5011), with 4 layers of DNA® Cotton. The flow of this DNA filters' set is +22.35% more than the stock filters'! DNA air filters' flow: 124.30 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees CelsiusBMW stock filters' flow: 101.60 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius. These DNA® filters are designed as High Flow Air filters for: ‘Road use’.