Fuel pump dosing 24v for Webasto heater - 1322433A View larger

Fuel pump dosing 24v for Webasto AT/TH heater - 1322433A

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Webasto Heater Fuel Dosing Pump 24v,

For air heatersAirTop 2000/S/ST/STC, AirTop 3500/5000/3500ST / 5000ST/Evo 3900 / 5500,
For liquid heatersThermo 90/S/ST/Pro,

Please NOTE 24v ONLY.

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Data sheet

ManufacturerWebasto (Germany)
Voltage24 V

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Fuel pump (dosing pump)

The dosing pump is a combined supply, dosing and shut-off system to provide the heater with fuel from the vehicle’s fuel tank. The dosing pump is controlled by pulses emanating from the control unit.

Check the fuel pump.

The performance of the fuel pump is measured using the Thermo Test diagnostic tester. It is necessary to measure the amount of fuel that pumps the metering pump for a certain number of piston strokes. To do this, remove the fuel supply pipe from the heater and place it in the measuring container (20 ml). To activate the function of filling the fuel line. Perform three filling cycles. The first is needed to guarantee the filling of the fuel line, the second and third - to measure. After the dosing pump has been in operation for 60 seconds, the amount of fuel should be 20 ± 2 ml. You can also apply 256 pulses to the terminals of the dosing pump (operating voltage of the heater), the amount of fuel should be in the range from 14.5 to 17.5 ml. In case of seizure of the piston, valve,

Installation positions.

Before installing the metering pump, make sure that the excess pressure at the fuel intake is less than 0.2 bar. It is advisable to place the dosing pump in a cool place. The ambient temperature should never exceed + 20 ° C for gasoline and + 40 ° C for diesel heaters at any time. The dosing pump and fuel lines must not be installed near heat-emitting parts of the vehicle. If this is not possible, thermal insulation should be provided. The preferred installation location is near the fuel tank.

Webasto Fuel pump dosing 24v 1322433A SUITABLE FOR 24V ONLY:

Air Heaters:

    • Webasto Air top 2000
    • Webasto Air top 2000S
    • Webasto Air top 2000ST
    • Webasto Air top 2000STC
    • Webasto Air top 3500
    • Webasto Air top 3500 ST
    • Webasto Air top 5000
    • Webasto Air top 5000 ST
    • Webasto Air top Evo 3900
    • Webasto Air top Evo 5500

Liquid Heaters:

  • Webasto Thermo 90
  • Webasto Thermo 90 S
  • Webasto Thermo 90 ST
  • Webasto Thermo 90 Pro
All orders are sent well packed, protected for safe transportation. Each parcel has its own tracking number and may be tracked any time during the shipping.

The time of delivery

Europe7-14 Days
United Kingdom
North America
South America*14-22 Days
New Zealand*

* Delivery costs to marked countries may be different from listed. Please contact us to clarify final cost

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Air Top 2000/S/ST/STC