The Wacker Neuson Switch is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, including diesel-powered configurations such as the 2x12, 1x16, and 1x20 duct variants. As a direct OEM replacement, this switch is sourced from Wacker Neuson and built to the same specification as the original part installed at the factory. It is confirmed to fit multiple HI 770 XHD machine configurations, making it the correct choice when servicing or restoring heater operation on these units.
Key Features
- Genuine OEM Electrical Specification — Manufactured to match the exact switching characteristics, contact rating, and terminal configuration of the original part, ensuring correct circuit behavior in the HI 770 XHD control system.
- Drop-In Replacement — Connects directly to the existing wiring harness and mounts in the original position, requiring no adaptation or reworking of the heater's electrical circuit.
- Broad HI 770 XHD Fitment — Compatible across multiple HI 770 XHD Indirect Air Heater configurations, including 2x12, 1x16, and 1x20 diesel duct models as well as Arctic Bear XHD and Arctic Bear XHD NS variants.
- Restores Reliable Heater Control — A failed or intermittent switch can prevent the heater from starting, cycling correctly, or shutting down safely; replacing it restores full, predictable operator control of the unit.
- Fuel System Safety Relevance — In diesel indirect heaters, the switch plays a role in controlling fuel-related circuits; using a correctly rated OEM part helps maintain the integrity of those safety-critical control functions.
The switch in a diesel indirect air heater is part of the electrical control circuit that governs how the unit starts, operates, and shuts down. It allows the operator to engage or interrupt power to key heater functions, and it may also interact with safety or fuel-flow control circuits depending on its position in the system. When a switch wears out or fails, it can cause the heater to become unresponsive, behave erratically, or refuse to start — leaving a crew without heat when it matters most on cold-weather job sites.
Part Details
| Part Number | 5000166773 |
|---|---|
| Old Part Number | 0166773 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Switch |
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 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
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.
