FASS Titanium Series Extended Length Particulate Filter PF-3001XLFASS Fuel Systems PF3001XL Particulate Filter (PF3001XL). Part No: PF3001XLOur New Particulate Filter is rated at 144 microns. The 144 Micron Particulate Filter on the suction side will drastically reduce cavitation, increase flow properties, lower the sound output of the FASS System, and removes larger fuel particulates. The new XWS3002XL MUST be used in conjunction with the PF3001XL, the new filters cannot be used in combination with the FF 3003 FF