Get U.S.-based product support from vehicle HVAC experts. We can help with compatibility, product selection, installation, and troubleshooting.
Contact an Expert
Availability:
Usually ships in 24 hours
Shipping:
Calculated at Checkout. Most in-stock orders ship from our Costa Mesa, CA warehouse the same or next business day.
View Shipping Details
Warranty:
Products include manufacturer-backed warranty coverage. Terms vary by product and brand.
View Warranty Details
Returns:
Eligible unused items in their original packaging may be returned within 14 days of delivery. Terms and fees may apply.
View Return Policy
🔒
Secure Checkout:
Core Features & Benefits
Genuine Espar / Eberspacher fuel dosing pump (fuel metering pump) 12V designed for Hydronic D4WSC and D5WSC heater systems with internally fitted fuel pumps. This pump ensures precise fuel delivery, stable combustion, and reliable heater performance.
Part Numbers and References
224504030000
22.4504.03.0000
22.4504.03.00.00
22 4504 03 0000
22 4504 03 00 00
Application
This fuel metering (dosing) pump is used in Hydronic heaters with integrated (internal) pump systems. It delivers controlled pulses of diesel fuel from the tank to the heater, ensuring correct combustion and efficient heating performance.
Compatibility
Compatible with Eberspacher Hydronic D4WSC and D5WSC heater systems (12V)
Designed for heaters with internally mounted fuel pump configurations
Suitable Heater Models
252257050000 - Hydronic D4WSC 12V
252221050000 - Hydronic D4WSC 12V
252385050000 - Hydronic D4WSC 12V
252219050000 - Hydronic D5WSC 12V
252390050000 - Hydronic D5WSC 12V
201821050000 - Hydronic B4WSC 12V
Genuine Product Guarantee
Original Espar / Eberspacher OEM fuel metering pump
Supplied by an authorised Eberspacher North American dealer
Manufactured to factory specifications
Ensures correct fuel metering and heater performance
Specifications
Voltage: 12V
Fuel type: Diesel
Application: Fuel metering pump
Heater type: Hydronic water heaters (internal pump systems)
Condition: New
Key Features
Precise diesel fuel dosing for efficient combustion
Designed specifically for internal pump Hydronic systems
Reliable performance in automotive and commercial applications
Direct replacement for original equipment
Also referred to as a fuel dosing pump
Common Symptoms of a Faulty Fuel Pump
Heater fails to start or shuts down shortly after ignition
