The Wacker Neuson Relay is a genuine OEM component designed for the E3000 and E5000 Ground Heater series, E3000 Hydronic Surface Heater series, and Pureheat Hydronic Heater series. As a direct OEM replacement, the meets Wacker Neuson's original electrical specifications, ensuring correct switching behavior and circuit protection across all covered configurations. This relay fits a wide range of E3000 and E5000 variants — including liftbail, generator, diesel, gas, and temperature control builds — as well as Pureheat oil burner and gas burner units. Stocking this part keeps your heating equipment ready for the demands of cold-weather concrete curing, ground thawing, and temporary heat applications.
Key Features
- OEM-Spec Switching Ratings — Manufactured to Wacker Neuson's original coil voltage and contact load specifications, so the relay opens and closes circuits exactly as the heater's control system expects.
- Drop-In Electrical Fit — Matches the original connector footprint and terminal configuration, allowing straightforward installation without re-wiring or adapting the harness.
- Broad Heater Family Coverage — A single part number covers E3000 Ground Heater, E3000 Hydronic Surface Heater, E5000 Ground Heater (gas and diesel burner), and Pureheat Hydronic Heater configurations.
- Sustained Burner and Pump Control — A functioning relay is critical to reliable burner ignition sequencing and circulation pump operation; a failed relay can cause the heater to shut down unexpectedly or fail to start.
- Genuine OEM Confidence — Sourced directly from Wacker Neuson, this part carries the same part number referenced in the OEM parts manual, confirming you are installing the correct component for your machine.
A relay is an electrically operated switch that allows a low-current control signal — from the heater's thermostat or control board — to switch a higher-current circuit, such as the burner motor or circulation pump. In hydronic and ground heaters, the relay plays a central role in the heating cycle: when the control system calls for heat, the relay closes to energize the appropriate load, and opens again to shut it down. When a relay fails, it can prevent the burner from firing, cause erratic on/off cycling, or leave a circuit permanently open or closed — all of which interrupt heating output and can leave a job site without the ground thaw or concrete curing capacity it needs.
Part Details
| Part Number | 5000166719 |
|---|---|
| Old Part Number | 0166719 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620679, 5000620158, 5000620678, 5200014677, 5100017807, 5100017809, 5200014678, 5200014679, 5200014720, 5100017806, 5100017808, 5100025046, 5100025045 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
