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This is a new complete replacement Espar/Eberspaecher 12V heater.  It come with 12V heater, fuel metering pump and water pump.

Replacement heater and Fuel Metering pump.

If replacing the D2 heater with this newer version of the D2, 02 Adapter harness are required to connect to the existing Main wiring harness: 1 - 20.2900.70.0025, 1 - 20.2900.70.0026.

Original replacement Espar Eberspaecher Airtronic D4 Heater and Fuel Metering Pump, full factory 2 year warranty, simple replacement of original heater.

Please Note, this Heater does not come with an air Outlet Hood, if a new Outlet Hood is required the appropriate size Hood will need to be ordered separately.

This is a 12 volt diesel fueled 18,800 BTU replacement heater and fuel metering pump only and does not include any installation components.

New OEM Replacement Airtronic D4 24V.

Please Note, does not come with an air Outlet Hood.

The Digi-Max controller provides an easy to set digital display, an onboard ambient air temperature sensor, an adjustable auto shutoff, adjustable low voltage protection, records maintenance hours, and displays troubleshooting tips for fault codes displayed.