Post-Pump Fuel Filtration

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If you are selling or installing a fuel filter on the outlet of an Aeromotive fuel pump, be certain you do not use a filter that causes more problems than it solves. Surface area (element size) and micron rating, together with the housing design (in-line or canister) and port size (AN-06, AN-08, AN-10, etc.), make up the key criteria that must be considered when determining what fuel filter is suitable for an application. The two outcomes of overlooking these criteria are fuel delivery problems and drivability problems. These issues are easily avoided when armed with the facts.

Aeromotive fuel filters are engineered to meet all critical criteria for proper fuel system performance. Of course the desired filtration level (micron rating) and AN port size are integral to our filter designs. Beyond that, Aeromotive filters feature full-flow housings which are larger and less restrictive, and come equipped with filter elements featuring significantly increased surface area compared to “house brand” filters.

When choosing a filter for use after the pump and before the engine, use an Aeromotive 10-micron (part numbers 12301 and 12310), 40-micron (part number 12335), or an acceptable equivalent. Note: these filters are for use on the fuel pump outlet side only.

Any filter used after the pump must meet the following requirements:
1) The filter assembly used on the outlet side of any Aeromotive fuel pump must have the appropriate micron rating to protect the engine.
2) The correct filter must also feature sufficient port size and element surface area to support full pump flow without clogging over too short a period of time.
3) We recommend post-pump filters with AN-10 ports, 10-micron to 40-micron elements, and at least 60 square inches of surface area.


WARNING: Any filter element incapable – by design – of accepting 100% of an Aeromotive pump’s flow capacity, or any filter that has become sufficiently clogged, may result in engine starvation and/or harm to the fuel pump. Pump failure caused by the use of inadequate or poorly maintained filters is not due to a defect in materials or workmanship and falls outside the Aeromotive warranty!