The Wacker Neuson Limit Control is a genuine OEM component designed for the HI 770 XHD and Arctic Bear HD series indirect air heaters. As a direct OEM replacement, is sourced and validated by Wacker Neuson to meet the original design specifications of your machine. Compatible across multiple HI 770 XHD and Arctic Bear HD configurations — including diesel and natural gas variants — this part delivers a verified fit for a straightforward service repair. Keep your heating equipment running through demanding cold-weather operations with the correct OEM part.
Key Features
- Genuine OEM Temperature Safety Control — Manufactured to Wacker Neuson's original specification, ensuring the limit control operates at the correct trip threshold for your heater model.
- Direct Drop-In Replacement — Engineered to match the original mounting configuration and electrical connections of the HI 770 XHD and Arctic Bear HD series heaters for a straightforward swap.
- Broad HI 770 XHD and Arctic Bear Fitment — Confirmed compatibility across diesel and natural gas Arctic Bear HD and HI 770 XHD indirect air heater configurations.
- Protects Burner and Heat Exchanger Integrity — A correctly functioning limit control prevents overheating conditions that can damage the burner assembly and heat exchanger, keeping output air temperatures within safe operating ranges.
- Critical Safety Component — The limit control is a primary overheat protection device; using a verified OEM replacement ensures the heater shuts down correctly under fault conditions, protecting both personnel and the machine.
A limit control is a temperature-sensing safety switch that monitors the operating temperature inside the heater. When temperatures exceed a set threshold — due to restricted airflow, a blocked flue, or a burner fault — the limit control interrupts the burner circuit and shuts the unit down to prevent damage or a fire hazard. When the limit control fails or degrades, the heater may shut off unexpectedly during normal operation, fail to restart, or in a worst case, allow the unit to run beyond safe temperature limits. Replacing a faulty limit control with the correct OEM part restores proper overheat protection and normal heater operation.
Part Details
| Part Number | 5000166758 |
|---|---|
| Old Part Number | 0166758 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Limit Control |
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 |
| Indirect Mobile Air Heater, Na tural Gas | Arctic Bear HD | 5000620199, 5000620197 |
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.
Wacker Neuson
Wacker Neuson Limit Control, Snap Disc, 200F | 5000166514
