FASS Fuel Systems Filter Pack XL — XWS3002XL Water Separator & PF3001XL Particulate Kit, 2‑micron Water Capture

The FASS Fuel Systems Filter Pack XL is a two-piece service kit that includes one XWS3002XL extreme water separator and one PF3001XL particulate filter to maintain FASS fuel systems.

Built for shops or serious DIYers who want a ready-to-install maintenance solution, this pack replaces older FASS filters with updated, higher-efficiency elements. The XWS3002XL water separator is an absolute 2-micron element that traps over 99% of water, eliminating the need for a drain, while the PF3001XL 144-micron particulate filter sits on the suction side to reduce cavitation and remove larger contaminants. These two filters are engineered to work together; they are not compatible with older FF3003/FF-3010 or FS1001/FS1020 series elements.

How does the XWS3002XL improve water separation in my system?

The XWS3002XL uses a fine 2-micron absolute element to capture microscopic water particles and free water, dramatically reducing moisture carried into the pump and fuel rail. Because it traps over 99% of the water, routine manual draining is no longer required, simplifying upkeep and reducing downtime.

• 2-micron absolute element for high-efficiency water capture
• Over 99% water removal rate, minimizing downstream corrosion risk
• No drain required, streamlining maintenance tasks
• Must be paired with PF3001XL; not compatible with older filter models

Why is the PF3001XL particulate filter installed on the suction side?

Placed before the pump, the PF3001XL’s 144-micron rating removes larger solids that can cause cavitation and wear. By cleaning fuel upstream, it helps maintain steady flow, lowers system noise, and prolongs pump and injector life without restricting suction performance.

• 144-micron media reduces large particulates and debris
• Decreases cavitation risk and improves volumetric flow
• Contributes to quieter pump operation by easing load spikes
• Specifically paired to work with the XWS3002XL in the new configuration

What does this filter pack include and how easy is installation?

The pack contains one XWS3002XL extreme water separator and one PF3001XL particulate filter, offering everything needed to service a FASS Fuel System with the new filter layout. Installation follows standard FASS service steps: remove the old elements, install the PF3001XL on the suction side and the XWS3002XL on the pressure side, and verify connections and leak-free operation.

• One XWS3002XL (extreme water separator) included
• One PF3001XL (particulate filter) included
• Ships as a complete service kit for a single system refresh
• Follow FASS guidelines for placement and torque on fittings

Who is this for: the FASS Fuel Systems Filter Pack XL is intended for diesel vehicle owners, fleet maintenance shops, and independent mechanics who maintain FASS-equipped engines and want a reliable, high-efficiency filter upgrade. If you currently use discontinued FASS elements or need a ready-to-install service kit to reduce water contamination, cavitation, and system noise while simplifying maintenance, this pack is designed for your application.