Features: 1.Application: Diesel heater fuel metering pump is specially designed for Eberspacher Airtronic D2 D4 12V, suitable for replacing the old or damaged metering pump. 2.Part Number: OE number of fuel metering pump are 22451901, 22451910000, 28451901, 2451910000. Please double check the part number of your item before ordering. 3.Function: The parking heater fuel pump supplies fuel to the machine by pulse, and pumps the fuel into the combustion chamber to keep the machine burning. 4.Advantages: Through high accuracy processing, the fuel pump is characterized low noise, long service life, waterproof, automatic pressure relief, oil saving, etc. 5.Easy to Clean and Observe: The fuel pump has a removable design, with a transparent cover to observe the internal conditions, and dual filtration provides more efficient filtration. Specification: Item Type: Heater Fuel Metering Pump_x000D_ Material: Copper + ABS + metal alloy_x000D_ OE: 22451901, 22451910000, 28451901, 2451910000_x000D_ Working Voltage: 12V_x000D_ Power: 1KW-5KW_x000D_ Port: 2PINS_x000D_ Function: The modified parking heater fuel pump has a removable cleaning design. The quiet working belt with a transparent cover can observe the internal conditions. The dual filtering provides a more efficient filtering effect. It is very suitable for replacing the old or damaged metering pump_x000D_ Application: For Eberspacher Airtronic D2 D4 12V Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!_x000D_ 3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.