Features: 1.OE Number: The referencing OE number of this fuel metering pump is 22451901, which is molded and designed depend on the original data, and maintaining the original model. 2.Fitment: The electronic fuel metering pump is a replacement for Eberspacher Airtronic D2 12V, replacement for Eberspacher Airtronic D4 12V, please check before ordering. 3.Function: The fuel metering pump pulses the fuel to the machine, pumps the fuel into the combustion chamber, and allows the machine to burn continuously. 4.Advantages: The fuel metering pump has low noise, low power consumption, removable and washable, accurate pump oil volume, applicable for diesel and gasoline, long life. 5.Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency. Specification: Item Type: Fuel Metering Pump OE Number: 22451901 Material: Iron shell, copper core Working Voltage: 12v Power: 1kw-5kw Flow: 22ml/1000 times Fitment: Replacement for Eberspacher Airtronic D2 12V Replacement for Eberspacher Airtronic D4 12V Note: Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!