The pump draws fuel from the vehicle or auxiliary fuel tank and supplies it to the heater in controlled pulses. Correct fuel metering is essential for reliable ignition, stable combustion and consistent heater operation.

BTRAC part 416824 crosses to Eberspächer part number 224519010000, also formatted as 22.4519.01.00.00.

This 12V pump is used with compatible Airtronic D2, D4, D4S and B4 heaters. It should not be substituted for a 24V fuel pump or for a pump intended for a different heater output or generation.

A complete installation may also require the 130482 1.5 mm plastic fuel line, 36075300 3.5 mm fuel hose, 251888800102 fuel-line adapter, 202900202010 fuel pickup, compatible clamps and the correct electrical connector.

Always confirm the heater model, voltage and complete heater number before ordering. Fuel-metering pumps may appear similar while providing different electrical and fuel-delivery characteristics.

Key Features

• Replacement fuel-metering pump
• Designed for compatible 12V Airtronic heaters
• Fits specified Airtronic D2 and D4 applications
• Compatible with specified D4S and B4 heater configurations
• Crosses to Eberspächer part number 224519010000
• Delivers controlled pulses of diesel fuel
• Supports reliable heater ignition and combustion
• Suitable for heater installation and fuel-system repair
• Works with properly sized fuel lines, hoses and connectors
• New replacement component

Specifications

• BTRAC Part Number: 416824
• Eberspächer Part Number: 224519010000
• Formatted Eberspächer Number: 22.4519.01.00.00
• Product Type: Fuel-metering pump / fuel-dosing pump
• Voltage: 12V
• Fuel Type: Diesel
• Primary Function: Meters fuel from the tank to the heater
• Heater Type: Diesel-fired air heater
• Compatible Heater Families: Airtronic D2, D4, D4S and B4
• Installation Location: Heater fuel-delivery system
• Brand Application: Eberspächer/ESPAR
• Condition: New replacement part
• Unit of Measure: Each

Compatible Eberspächer/ESPAR Heaters

Part 416824 is intended for compatible 12V versions of:

• Eberspächer Airtronic D2
• ESPAR Airtronic D2
• Eberspächer Airtronic D4
• ESPAR Airtronic D4
• Eberspächer Airtronic D4S
• ESPAR Airtronic D4S
• Eberspächer Airtronic B4
• ESPAR Airtronic B4
• Heater systems requiring fuel pump 224519010000

Compatibility should be confirmed using the heater identification label and complete heater number before ordering.

This pump is not intended for:

• 24V heater systems
• Applications requiring fuel pump 224518010000
• Heaters requiring a different fuel-delivery rate
• Heater models that have not been positively identified

Common Service Applications

The fuel-metering pump may require replacement when:

• The pump does not operate
• No fuel is delivered to the heater
• Fuel delivery is intermittent
• Electrical testing identifies pump failure
• The pump is physically damaged
• The heater repeatedly fails to ignite
• The heater shuts down because of inadequate fuel delivery
• The fuel system is being rebuilt
• A technician has diagnosed the metering pump as the failed component

A no-start condition does not automatically confirm fuel-pump failure. Fuel supply, wiring, connectors, filters, lines and heater components should be inspected as part of the diagnosis.

Important Installation Notes

• Confirm that the heater operates on 12 volts.
• Confirm the complete heater model and heater number.
• Do not substitute a 24V pump.
• Disconnect electrical power before beginning service.
• Shut off or isolate the fuel supply before removing the pump.
• Confirm the correct fuel-flow direction before installation.
• Install the pump in the required position and orientation.
• Use properly sized fuel lines, hoses, adapters and clamps.
• Inspect the fuel-pump connector and wiring.
• Inspect the fuel pickup and fuel lines for restrictions.
• Inspect the pump’s inlet filter where applicable.
• Route fuel lines away from heat, sharp edges and moving components.
• Confirm that all fuel connections are secure and leak-free.
• Prime the fuel system according to the applicable heater procedure.
• Test heater operation after completing the repair.
• Installation should be performed by a technician familiar with diesel-fired heater fuel systems.

Related Products

• 130482 – Eberspächer/ESPAR 1.5 mm Plastic Fuel Line
• 36075300 – Eberspächer/ESPAR 3.5 mm Fuel Hose
• 251888800102 – Eberspächer/ESPAR 3.5 mm to 5 mm Fuel-Line Adapter
• 202900202010 – Eberspächer/ESPAR Universal Fuel Pickup Pipe
• 416829 – Eberspächer/ESPAR Fuel-Pump Electrical Connector
• 130510 – Eberspächer/ESPAR Fuel-Pump Screen
• 201312000006 – Eberspächer/ESPAR Integrated Fuel Filter
• 221000202800 – Eberspächer/ESPAR 10-Liter Plastic Fuel Tank
• 420453 – Eberspächer/ESPAR Airtronic D2/D4 12V Glow Pin
• 417745 – Eberspächer/ESPAR Airtronic D2 Flame Tube
• DH-E1000-MAINT – Eberspächer/ESPAR Airtronic D2 12V Maintenance Kit