6 0 Cummins ISB / QSB DEF Pump Price Drop $1,200 USD (SURPLUS NEW) Bosch OEM Doser Fluid Supply Module for Cummins ISB/QSB TIER 4 Diesel Engine, for sale!!!! Cummins Part #: 4387305, Cummins Supersession Part #: 5418806, Bosch Part #:... ConditionNewPart Number4387305Stock NumberDEF1005 MLS Number13448364CategoryDiesel Exhaust Fluid (DEF) Pumps Last Updated11/14/2025 LocationHialeah, FL, US Sold ByJJ Rebuilders Inc. (844) 385-___ SHOWNUMBERCall Seller Email Seller Save More Info