The Wacker Neuson Heat Exchanger is a genuine OEM component designed for the HI 770 XHD series indirect-fired diesel air heaters, including Arctic Bear XHD and Arctic Bear XHD NS configurations. As a direct OEM replacement, this part is manufactured to the same specifications as the original, ensuring seamless installation and consistent thermal performance across all compatible HI 770 XHD units. Whether you're servicing a 2x12, 1x16, or 1x20 duct configuration, part number is the correct factory replacement for this heater family. Keep your heating equipment running at full output through the demanding cold-weather season with the right part from the source.
Key Features
- Genuine OEM Thermal Integrity — Manufactured to the original heat-transfer specification, ensuring the exchanger core maintains correct combustion gas isolation and output air temperature across the full BTU range of the HI 770 XHD.
- Drop-In Replacement — Matches original mounting points, inlet/outlet connections, and core dimensions for straightforward R&R without fabrication or adaptation.
- Broad HI 770 XHD Coverage — Confirmed fitment across Arctic Bear XHD, Arctic Bear XHD NS, and standard HI 770 XHD indirect air heater variants in 2x12, 1x16, and 1x20 duct configurations.
- Sustained Heat Output — A properly functioning heat exchanger is critical to delivering consistent, clean warm air output; a cracked or fouled core causes temperature drop, incomplete heat transfer, and potential combustion gas contamination of the air stream.
- Combustion Gas Separation — The heat exchanger physically isolates exhaust gases from the supply air path — a function that is safety-critical in indirect-fired heating applications. Using a correctly rated OEM replacement maintains that separation as designed.
In an indirect-fired air heater like the HI 770 XHD, the heat exchanger is the core thermal transfer component. Diesel combustion gases pass through the exchanger's sealed internal passages, heating the surrounding metal surface, while fresh supply air flows over the outside and picks up that heat before being discharged into the work area — meaning exhaust gases never mix with the heated air. Over time, the exchanger core can develop fatigue cracks, corrosion, or carbon buildup that reduces heat transfer efficiency or compromises the gas-separation barrier. Replacing a worn or damaged heat exchanger restores full heating capacity and maintains the clean-air integrity the indirect-fired design is built around.
Part Details
| Part Number | 5000177741 |
|---|---|
| Old Part Number | 0177741 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Heat Exchanger |
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.
