5506956RX DEF Doser Urea Pump Assembly 5506956 For Cummins Diesel Engine 4388105. High-quality material, good corrosion protection and best durability. Easy to install, direct fits. Compared with other similar products, our DEF Pump has higher performance. 4388105, 5506956, 2115624, 2208766, 5506956RX. A06X234, 2208766PE, 5506956CUM, 2115624PE, A052Y. 1X DEF Doser Urea Pump. Will Fit Following Models. For Cummins 5506956, 4388105 DEF Doser Pump New Cummins 5506956, 4388105, 2208766,2115624, A06X234 – DEF Doser Pump. Note: Please compare your item carefully with photo and OE Number to avoid mistake!!