Cummins Doser Fluid Supply Module 4387305

The Cummins Doser Fluid Supply Module (part # 4387305) is an OEM module used in SCR/DEF dosing systems (Denoxtronic 2.2 / high-pressure systems) on medium-duty and heavy-duty diesel engines. It supplies Diesel Exhaust Fluid (DEF) for selective catalytic reduction, and is designed for 24 V operation on ISB / QSB / ISC / ISX platforms.