The Wacker Neuson Insulation is a genuine OEM component designed for the HI 770 XHD series indirect-fired diesel air heaters, including Arctic Bear XHD, Arctic Bear XHD NS, and HI770XHD configurations. Sourced directly from Wacker Neuson, this insulation is manufactured to the exact material and dimensional specifications of the original part. It is a direct replacement for the insulation found across the full HI 770 XHD lineup, covering diesel 2x12, 1x16, and 1x20 duct configurations as well as Extra Heavy Duty Air Heater variants. Verify your model number against the fitment list before ordering to ensure compatibility.
Key Features
- Genuine OEM Material Integrity — Manufactured to Wacker Neuson's original thermal and fire-resistance specifications, ensuring the insulation performs the same as the part it replaces in high-heat diesel heater environments.
- Drop-In Replacement — Engineered to match the original profile and mounting points of the HI 770 XHD heater body, allowing straightforward reinstallation without reworking surrounding components.
- Broad HI 770 XHD Coverage — Fits Arctic Bear XHD, Arctic Bear XHD NS, and HI770XHD units across multiple duct configurations and serial number ranges, making it the correct service part for the full 770 XHD family.
- Heat Retention Performance — Properly functioning insulation keeps combustion heat directed through the heat exchanger and output duct, maintaining the heater's rated output efficiency on cold-weather jobsites.
- Fuel System & Heat Zone Safety — Insulation in indirect-fired heaters separates combustion byproducts from the conditioned air stream; replacing degraded insulation helps maintain the thermal barrier integrity critical to safe indirect heater operation.
In an indirect-fired air heater, insulation surrounds the combustion chamber and heat exchanger to contain heat within the system and prevent energy loss to the surrounding structure. It plays a key role in directing thermal output efficiently toward the discharge duct while protecting adjacent components from excessive heat exposure. When insulation deteriorates — through cracking, compression, or heat damage — the heater loses output efficiency, surrounding parts can be exposed to damaging temperatures, and the integrity of the separation between combustion gases and the heated air supply may be compromised.
Part Details
| Part Number | 5000167423 |
|---|---|
| Old Part Number | 0167423 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Insulation |
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.
