4388105, 5506956, 2115624, 2208766, 5506956RX. A06X234, 2208766PE, 5506956CUM, 2115624PE, A052Y. Will fit Following Models. For Cummins 5506956, 4388105 DEF Doser Pump. Note: Please compare your item carefully with photo and OE Number to avoid mistake!! Compatible table only for reference. Please be aware that the vehicle compatibility list may not be 100% accurate. However, the OE number provided in our listing is. Match the result with the OE number we have in the listing that would be the best way to guarantee fitment. Before Purchasing, please carefully check the OEM part number and illustrations to make sure it is compatible with your model. We are always here to solve any problems you may encounter, and we’ll reply you as soon as possible. We will do our best to provide you with the best solution. Thanks for your understanding.