Cummins ISX QSX DEF Doser - Bosch DEF Pump Module (SKU: 044404229X)Cummins ISX QSX DEF Doser Bosch DEF Pump Module Cummins ISX DEF Doser Cummins QSX DEF Doser The Bosch DEF Pump Module is ideal for light duty diesel engines. Featuring high quality construction and durable components, it is designed for maximum performance and long lasting durability. The module also features an integrated thermal overload protector for optimal safety. Cross reference part numbers: 0 444 042 003 0 444 042 013 0 444 042 020 0 444 042