aFe Magnum SHIELD Pre-Filters protect your performance air filter and extends your filter cleaning intervals by removing large particles like twigs and bugs from the air stream prior to the air filter. This pre-filter is made of a dry weave fabric that does not attract dirt and cleans with soap and water. The aFe POWER logo is silk screened on the pre-filter to let everyone know an aFe Quantum intake is powering your rig.