The Wacker Neuson Combustion Complete is a genuine OEM assembly designed for the HI 770 XHD series indirect diesel air heaters. Sourced directly from Wacker Neuson, this combustion assembly ensures the heating system operates at the correct output and fuel efficiency the machine was engineered to deliver. Compatible with HI 770 XHD configurations including the Arctic Bear XHD, Arctic Bear XHD NS, and standard HI770XHD variants, this part covers a broad range of the XHD heater lineup. When the combustion assembly is worn or damaged, heat output drops, fuel consumption rises, and the unit may fail to ignite reliably — making timely replacement essential for cold-weather operations.
Key Features
- Complete OEM Combustion Assembly — Supplied as a fully assembled unit with all combustion components matched to Wacker Neuson's original output and fuel-burn specifications for the HI 770 XHD.
- Drop-In Replacement — Engineered to the same mounting dimensions and connection points as the original, allowing direct installation without adapting brackets or fuel lines.
- Broad HI 770 XHD Coverage — Fits Arctic Bear XHD, Arctic Bear XHD NS, and multiple HI770XHD machine configurations across 1x16, 1x20, and 2x12 duct arrangements.
- Restored Heat Output — A fresh combustion assembly brings back full BTU performance, ensuring consistent, even heat delivery across the connected duct run on cold-weather jobsites.
- Fuel System Safety — As a core fuel-burning component, using the correct OEM assembly maintains proper combustion chamber integrity and helps prevent unsafe fuel-rich or incomplete burn conditions.
The combustion assembly is the heart of the HI 770 XHD indirect air heater — it houses the burner, combustion chamber, and associated components that ignite diesel fuel and convert it into clean, forced hot air delivered through the duct system. Because combustion gases are fully contained within the assembly and never mix with the supply air, the unit is safe for occupied and enclosed spaces, but only when the combustion chamber is structurally sound and functioning correctly. A cracked, fouled, or worn combustion assembly compromises ignition reliability, reduces heat output, and can cause the unit to cycle off on safety lockout — leaving crews without heat when temperatures drop.
Part Details
| Part Number | 5000173578 |
|---|---|
| Old Part Number | 0173578 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Combustion Complete |
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.
