DEF Doser Urea Pump Assembly for Cummins Diesel Engine 5506956RX/4388105/5506956. 4388105, 5506956, 2115624, 2208766, 5506956RX. A06X234, 2208766PE, 5506956CUM, 2115624PE, A052Y. Will fit Following Models. For Cummins 5506956, 4388105 DEF Doser Pump. Please compare your item carefully with photo and OE Number to. Compatible table only for reference. Please be aware that the vehicle compatibility list may not be 100%. However, the OE number provided in our listing is. Result with the OE number we have in the listing that would be the best. Before Purchasing, please carefully check the OEM part number and. Illustrations to make sure it is compatible with your model. If you are not. We are always here to solve any. Problems you may encounter, and we’ll reply you as soon as possible. Opening a return or case. We will do our best to provide you with the best. Thanks for your understanding. Because of the time difference, generally we will reply within 12 hours.