Arko Tractor Parts 100% New Fuel Injection Pump For Deutz Engine 2011 OEM Part Numbers: 04287049, 0428 7049, 5217 Class of the pump: Class D The package includes a 1* Fuel Injection Pump 100% Leakage Tested and High-Quality Product PLEASE NOTE:  1- You cannot mix and match classes on the same engine. 2- However if all pumps are being replaced you can switch to a different class 3- each class represents different injection timing