The Wacker Neuson Plug is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, the Arctic Bear XHD, and the E3000. As a direct factory replacement, this plug ensures a correct, secure connection within the heater's fuel or electrical circuit, maintaining system integrity across demanding cold-weather jobsite conditions. Wacker Neuson genuine OEM parts are manufactured to the same standards as the original components installed at the factory, so you can be confident the fits and functions exactly as intended.
Key Features
- Genuine OEM Electrical/Fuel Circuit Integrity — Manufactured to exact original specifications, ensuring the plug seats and seals correctly without voltage drop, fuel leakage, or connection failure that an ill-fitting substitute could cause.
- Drop-In Fitment — Engineered as a direct replacement that installs into the existing port or harness connection on compatible Wacker Neuson heater platforms without rework or adaptation.
- Broad Heater Family Coverage — Confirmed fitment across the HI 770 XHD Indirect Air Heater (multiple configurations), the Arctic Bear XHD, and the E3000 series, covering a wide range of Wacker Neuson climate equipment.
- Sustained Heat Output — A properly functioning plug maintains a consistent connection in the heater's circuit; a failed or damaged plug can interrupt ignition or fuel delivery, causing the unit to shut down in cold-critical conditions.
- Fuel System Safety Compliance — Where this plug serves a fuel-side connection, using the correct OEM-spec component helps prevent leaks and ensures the heater meets its original operating safety design.
A plug in an indirect-fired diesel air heater serves as a sealing or connection point within the machine's fuel delivery or electrical circuit — depending on its location, it either closes off an unused port to prevent fuel or fluid leaks, or it provides a secure terminal connection for electrical signals controlling ignition, burner function, or sensors. When a plug fails, cracks, or is missing entirely, it can result in fuel weeping, loss of electrical continuity, or erratic burner behavior. Replacing a worn or damaged plug with the correct OEM part restores the heater's sealed system and keeps the unit running safely and efficiently through extended cold-weather operation.
Part Details
| Part Number | 5000166729 |
|---|---|
| Old Part Number | 0166729 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| E3000 | E3000 | 5100055568, 5100056441, 5100056440 |
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.
