Now available from King Racing Products are these Billet Inline Stainless Fuel Filters. The small #6 30 micron stainless filter element cleans the alcohol of debris and air bubbles just before the barrel valve and nozzles. The large #12 stainless 100 micron element is designed to prevent any debris from getting to your fuel pump. Both filter elements also include a magnetic ring insert on the inlet side of the filter to catch any metal before the filter. 2” diameter. Anodized black to prevent corrosion.