Post-Pump Fuel Filtration

Sat, May 1, 2010

Technical Documents

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See the Case File related to Tech Bulletin #102 for more information. Click Here

STOP!! 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. When choosing a filter for use after the pump, before the engine, use only Aeromotive 10-micron P/N #12301, #12310 or 40-micron P/N #12335, or an acceptable equivalent (see specifications below). Note: These filters are for use on the fuel pump outlet side only, for engine protection.

Aeromotive advocates a two-step filtration approach to protect both fuel system and engine components. Technical Bulletin #101 specifies the requirements for selecting the correct pre-filter to use before the fuel pump.

You may run any brand filter after the fuel pump, but any filter used must meet the following requirements: The filter assembly used on the outlet side of any Aeromotive fuel pump must have the appropriate micron rating to protect the engine. The correct filter will also feature sufficient port size and element surface area to support full pump flow without clogging over too short a period of time. AN-10 ports and 10-micron to 40-micron elements with 60 square inches of surface area or more are recommended.

WARNING: Any filter element incapable by design of accepting 100% of an Aeromotive pump’s flow capacity, or any filter allowed to become sufficiently clogged to present a major restriction to fuel pump flow, 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!

SIZE DOES MATTER: Surface area (element size) and porosity (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 whether a fuel filter is suitable for an application. Today’s performance enthusiast is a smart consumer, aware of the importance of using the correct micron rating and port size/fuel line connections. Unfortunately, it’s a common problem to overlook filter housing design and element surface area factors when selecting a filter, with the unfortunate outcome being fuel delivery and drivability problems, issues 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 being offered as a cheaper substitute, of supposed equal performance.

Installing the correct fuel filtration after your Aeromotive fuel pump is a vital aspect of assembling a high-flow, reliable fuel system. In order to get the most from your investment, be certain to purchase and install Genuine Aeromotive Fuel Filters, both before and after your fuel pump. Remember, you get what you pay for and when it comes to filtration you can’t afford less!

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