View 2 Photos View 0 Videos Cummins ISB 6.7L Fuel / Water Separator for a Cummins ISB6.7 $50 USD Good used, cleaned and inspected Cummins ISB6.7 oil filter base housing assembly. Part number: 5285021. ConditionUsedFits To Make(s)CUMMINSFits To Model(s)ISB6.7Part Number5285021Stock Number1057814 MLS Number13436192CategoryFuel / Water Separators Last Updated1/3/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info