Pre-Filter Air Intake 5 Inch Length 4.75 Inch Top 6.5 Inch Bottom Conical VolantVolant Pre Filters are factory treated using a proprietary hydrophobic process and are manufactured from the same durable polyester material as their race proven regular style. This unique material contains uniform micron openings that will filter out debris . 005 or larger. This pre filter will prevent splashes of water, mud and sand from saturating your air filter. Details: For Use with Filter PN 5112, 5121, 5132, and 5142 Type: Conical Filter Base