FASS Titanium Series Fuel Filter Combo XWS-3002XL / PF-3001XL

In this review the FASS Titanium Series Fuel Filter Combo XWS-3002XL / PF-3001XL is assessed for diesel owners who want cleaner fuel and improved pump operation. The bottom line: this combo replaces the discontinued FF-3003 and combines an extremely efficient 2 micron absolute water separator with a 144 micron particulate suction filter, delivering cleaner fuel, reduced cavitation and quieter pump performance. For anyone running a FASS system and seeking a straightforward filter upgrade, the new pairing is the main reason to consider this package.

Key Features

• 2 micron absolute water separation: The XWS-3002XL traps over 99% of water in the fuel so a drain is no longer required, simplifying maintenance.
• 144 micron particulate filtration: The PF-3001XL on the suction side removes larger particulates to drastically reduce cavitation and protect the pump.
• Improved flow and reduced noise: Using the 144 micron suction filter increases flow properties and lowers the sound output of the FASS system for smoother operation.
• Designed as a matched pair: The XWS-3002XL and PF-3001XL are built to be used together and are not compatible with older FF-3003/FF-3010 or FS-1001/FS-1020 elements.
• Pressure-side placement for water separator: When replacing discontinued filters, the XWS-3002XL is installed on the pressure side of the pump for optimal water removal.

Who It's For

This combo is best for diesel truck owners and fleet operators who already run a FASS system and want an upgrade path after the discontinued filters were phased out. It suits users focused on reducing water contamination and improving pump life by cutting cavitation and trapping larger particulates before they reach sensitive components.

Owners who do not operate FASS pumps or who require ultra-fine particulate filtration beyond the stated 144 microns should look elsewhere or consult system specifications; the PF-3001XL is tuned to the suction side role, not for ultra-fine polishing of fuel.

Pros & Cons

Pros

• Exceptional water removal with the 2 micron absolute XWS-3002XL that eliminates the need for a drain.
• Reduced cavitation and improved flow from the 144 micron PF-3001XL placed on the suction side.
• Quieter pump operation and better overall system protection when both filters are used together.

Cons

• Not compatible with older FF-3003/FF-3010 or FS-1001/FS-1020 elements, so existing systems may need reconfiguration.
• Some users reported dent resistance issues with filter bodies in service, which could affect longevity in harsh installations.

Specifications

Product	FASS Titanium Series Fuel Filter Combo
Water separator rating	2 micron absolute
Particulate filter rating	144 micron
Replaces	FF-3003 (discontinued)
Intended placement	XWS-3002XL on pressure side, PF-3001XL on suction side
Compatibility	Must be used together; not compatible with FF-3003/FF-3010 or FS-1001/FS-1020

Our Verdict

The FASS Titanium Series XWS-3002XL / PF-3001XL combo is a practical upgrade for FASS system owners who need superior water removal and reduced cavitation. It offers clear operational benefits, including quieter pumps and improved flow, and represents good value for those replacing discontinued elements, though installers should be aware of compatibility and occasional reports of denting under harsh conditions.

Frequently Asked Questions

Are these filters compatible with older FASS elements?
They must be used together and are not compatible with FF-3003/FF-3010 or FS-1001/FS-1020 elements.

Which filter goes on the pressure side?
The XWS-3002XL water separator is placed on the pressure side and the PF-3001XL is placed on the suction side.

Will the water separator need draining?
No, the XWS-3002XL traps over 99% of water in the filter element so a drain is no longer required.