Hydronic D5 SC (24v) Heater and FMP

Espar Hydronic D5 SC — 24V OEM Replacement Coolant Heater & Fuel Metering Pump

Restore reliable cold-start performance with a genuine OEM Espar / Eberspaecher Hydronic D5 SC replacement unit. Designed as a direct drop-in replacement for first-generation Hydronic 5 systems, this heater and fuel metering pump (FMP) combination delivers the same factory-spec output you'd expect from a new installation — without the cost of a full kit.

Ideal for marine, truck, RV, and industrial operators replacing an inoperative unit and retaining their existing installation hardware.

What's Included:

• OEM Espar / Eberspaecher Hydronic D5 SC coolant heater (24V)
• Fuel metering pump (FMP)

What's Not Included:

• Installation components (wiring, mounting hardware, hoses, controller, fuel lines)
• Fuel pickup tube
• Coolant hoses

Key Specifications:

• Voltage: 24V DC
• Fuel: Diesel
• Output: 5 kW heating capacity
• Generation: First-generation Hydronic 5 (D5 SC)
• OEM Espar / Eberspaecher quality

Compatible with: First-generation Espar Hydronic 5 systems in commercial trucks, marine vessels, RVs, and heavy equipment.

Note: This listing is for the heater and FMP only. If you need a complete installation kit, please see our full 3rd generation HS3 D6L 24 volt kit.