4388105, 5506956, 2115624, 2208766, 5506956RX. A06X234, 2208766PE, 5506956CUM, 2115624PE, A052Y. Will fit Following Models. For Cummins 5506956, 4388105 DEF Doser Pump. 1 DEF Doser PumpAs picture shows Note: 1. Please make sure it will fit your machine before purchasing it. Excluding installation instructions, it is recommended to use professional installation. E have a large amount of stock, and many products have not been released yet. You can give us your hairstyle number and we can help you find them. We are always here waiting for your message. It is our pleasure to offer any help. We believe good communicationwillprevent many troubles. We sincerely hope to provide our customers great products and service. If you are unsatisfied about anything, just tell us, we will solve the problem for you. Please kindly keep the packing materials until you assure the products are perfectly fit for your car Or machine and you will not return them. Thanks for your understanding and hope you enjoy your shopping!