Product Description
FASS XWS1002 EXTREME WATER SEPARATOR
The FASS XWS1002 Extreme Water Separator is a 2-micron absolute hydroglass element designed to capture water inside the media—no drain needed. It is the current replacement for older HD-Series water separators and is engineered to protect high-pressure diesel injection systems with consistent, restriction-free flow.
Fitment & System Notes
- System compatibility: FASS HD Series pump/filter setups (replacement for discontinued FF-1003 style filters).
- Required pairing: Use only with PF3001XL Extended Length Particulate Filter.
- Filter placement (updated layout): XWS1002 installs on the pressure side; PF3001XL installs on the suction side.
- Do not mix with discontinued filters (FF-1003 or FS-1001).
Installation & Manuals
For system diagrams and install procedures, see the official FASS manuals: FASS Installation Manuals.
Cross-Reference & Related FASS Items (CPP Diesel)
- FASS PF3001XL Extended Length Particulate Filter — required companion to XWS1002.
- FASS XWS3002 Extreme Water Separator — current XWS series element (pairs with PF3001) for applicable systems.
- FASS XWS3002XL Extended Length Extreme Water Separator — extended length (pairs with PF3001XL).
- FASS PF3001 Particulate Filter — companion filter for XWS3002 systems.
- FASS FP3000XL Filter Pack — includes XWS3002XL + PF3001XL.
- FASS FP3000 Filter Pack — includes XWS3002 + PF3001.
FAQ
Does the XWS1002 have a drain?No. Water is trapped inside the element, so no drain is needed.
Which particulate filter pairs with XWS1002?
PF3001XL is required. Do not use with older FF-1003 or FS-1001 filters.
Where does each filter mount on updated systems?
Install the XWS1002 on the pressure side and the PF3001XL on the suction side for proper flow and protection.
What service interval should I expect?
Service life is commonly around 30,000 miles, but follow your maintenance schedule and fuel quality considerations.
Specifications for Fass XWS1002
| Brand | FASS Fuel Systems |
| Part Number | XWS1002 |
| Micron Rating | 2 micron absolute |
| System Compatibility | FASS HD Series; replaces older HD water separators (use only with PF3001XL) |
| Orientation (updated systems) | XWS1002 = pressure side; PF3001XL = suction side |
| UPC | 860003521151 |
| GTIN | 0860003521151 |
| Package Dimensions | 4.00 × 9.00 × 4.00 in |
| Shipping | Calculated at checkout |
| Prop 65 | Yes — Cancer and Reproductive Harm |
