FASS WS-1001 Fuel Water Separator Filter

FASS WS-1001 Water Separator Filter FASS 150 Series Filter


FASS WS-1001 Water Separator Filter

The FASS FS-1001 Water Separator is the replacement Water Separator Filter Element for:

  • FASS 150 Series Pumps
  • FASS HD Series Pumps
  • Versatile Series Pumps.

The  FASS FS-1001 Water Separator Filters from Fleetguard specifications:

  • Filters diesel fuel at a 10 Micron level.
  • Removes entrained water from your diesel fuel.
  • Removes emulsified water from your diesel fuel.

KLM Performance recommends keeping a spare set of the FASS 150 Replacement Filters in your truck at all times. Having an additional set of filters onboard will save you a lot of time and trouble when you get a bad load of fuel. The WS-1001 Water Separator Filter has now been replaced with the new and improved FS1001 Fuel Water Separator filter manufactured by Fleetguard.

KLM recommends the following service tips for this WS1001 Water Separator Filter:

  • Regularly draining this water separator filter to remove the water contained within this filter.
  • Regularly removing the water from this Fleetguard Fuel Water Separator FS1001 filter will help to prevent freeze-ups in your vehicle fuel system during the winter months.
  • By draining the water, you reduce the growth of fuel related bacteria.

This Fleetguard FS-1001 Water Separator is the FASS 150 Series Replacement Filter, which is an upgraded Fuel Water Separator. The FS-1001 filter ensures the removal of entrained and emulsified water from your diesel fuel.

KLM Performance recommends that you change your FASS Lift Pump filters on a regular interval to promote optimum engine efficiency. It is advisable to purchase these fuel filters in quantities of two filters at a time so that you always have a spare filter on hand.


  • engine
  • Flow Rate
  • Item Number FG FS1001
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  • year N/A
  • Manufacturer Part No FG FS1001
  • Product Application FASS HD, 150 and Versatile Systems
  • height 4
  • width 8
  • brand Fleetguard
  • faq
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  • manufacturer Fleetguard
  • Beam Pattern
  • Product Note