2 0 Cummins 6BT Fuel / Water Separator $60 USD Good used, cleaned and inspected Cummins 6BT engine oil filter base assembly. Part number: 3924338. ConditionUsedFits To Make(s)CUMMINSFits To Model(s)6BTPart Number3924338Stock Number1059456 MLS Number13634955CategoryFuel / Water Separators Last Updated6/10/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info