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Core Features & Benefits
Genuine Webasto DP42 / DP42.2 fuel dosing pump (fuel metering pump) designed for precise fuel delivery in Webasto Air Top and Thermo Top heater systems. This pump accurately meters diesel or gasoline fuel, ensuring stable combustion, reliable heater operation, and efficient performance.
Compatible with both 12V and 24V heater systems.
Part Numbers and References
9024803 / 9024803A
1324533 / 1324533A
9039917 / 9039917A
TM8860 / TM 8860
Application
This fuel metering (dosing) pump regulates the flow of fuel from the tank to the heater unit. Its pulse-controlled operation produces the normal rhythmic ticking sound and ensures consistent fuel delivery for efficient combustion.
Compatibility
Compatible with Webasto Air Top and Thermo Top heater systems
Suitable for Air Top Pro 25, Air Top 2000 STC, Air Top Evo 40, and Air Top Evo 55
Suitable for Thermo Pro 50, Thermo Pro 50 Eco, and Thermo Pro 90
Compatible with both 12V and 24V heater systems
Specifications
Voltage compatibility: 12V and 24V systems
Fuel type: Diesel or Gasoline
Pump type: DP42 / DP42.2 VDA
Includes damper: No
Genuine Product Guarantee
100% genuine Webasto OEM part
Factory-calibrated fuel delivery
Designed for long service life
Supplied by an authorised Webasto distributor
Key Features
Precise fuel dosing for consistent combustion
Compatible with diesel and gasoline heater systems
Compatible with both 12V and 24V heater systems
Supports reliable cold-weather starting
Direct replacement for DP42 and DP42.2 pumps
Also referred to as a fuel metering pump
Common Symptoms of a Faulty Fuel Pump
Heater fails to start or ignite
No fuel reaching the heater unit
Intermittent heater operation
Clicking sound but no combustion
Installation Notes
Install in the correct fuel flow direction
Mount at the proper angle according to Webasto specifications
Important - Beware of Counterfeit Fuel Pumps
Due to high demand, counterfeit and non-genuine fuel dosing pumps are widely available in the market. These may not meet Webasto factory calibration standards and can cause poor performance or failure.
For reliable operation and correct combustion, always use a genuine Webasto component supplied by an authorised distributor.
People Also Ask
Is a fuel dosing pump the same as a fuel metering pump? Yes, both terms refer to the same component.
Is the ticking sound normal? Yes, a rhythmic ticking sound indicates normal operation.
Can this pump run on gasoline and diesel? Yes, it is compatible with both fuel types.
