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Keeping a clean water separator on your “Grey” Titanium series FASS system is the only way to ensure clean fuel makes it to your truck’s injection pump, injectors, and engine. This replacement water separator filters contaminants down to 20 microns, and works with the Titanium systems that came with grey fuel pumps.
*FASS recommends changing your fuel filter every 15,000 miles and your water separator every 30,000
*If you have an older FASS Titanium system (with the blue pump) see PN FS-2001