Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace tolerances and procedures, three generations of track experience, and a meticulous approach to engineering, Aeromotive Fuel Systems has become the absolute pinnacle of performance fuel delivery. For 12310/12311 Filter Assembly, Fits All 2-1/2" OD Filter Housings. Recommended for applications burning pump gas, racing gas, diesel fuel, jet fuel, AV-gas, etc. Not recommended for alcohol fuels including ethanol and methanol. Over 90-sq. inches of element surface area supports extreme flow while providing good service life.