The Wacker Neuson Flange is a genuine OEM component designed for the HI 300HD D and HI 200HD D diesel indirect air heaters. As a direct factory replacement, this flange restores the original sealed connection point within the heater's airflow or fuel system assembly, ensuring the unit operates as intended. Sourced directly from Wacker Neuson, part number carries the same specifications as the original part fitted at the time of manufacture. Confirmed fitment spans HI 300HD D and HI 200HD D series indirect air heaters.
Key Features
- Genuine OEM Construction — Manufactured to the exact dimensional and material tolerances specified for the HI-series indirect air heater, ensuring a proper seal and no leakage at the connection point.
- Direct-Fit Replacement — Matches the original mounting bolt pattern and seating surface, allowing straightforward removal of the worn flange and installation of this replacement without machining or modification.
- Broad HI-Series Compatibility — Fits HI 300HD D and HI 200HD D diesel indirect air heater models, covering multiple serial number ranges within those families.
- Maintains Combustion and Airflow Integrity — A correctly seated flange keeps combustion gases and heated airflow properly routed through the unit; a cracked or warped flange can cause heat loss, pressure drop, or unsafe exhaust diversion.
- Fuel and Exhaust System Compliance — On diesel indirect heaters, flange integrity is critical to safe separation of combustion exhaust from the output airstream; using the correct OEM part preserves that separation as designed.
A flange on a diesel indirect air heater serves as the sealed interface between two sections of the combustion or exhaust pathway, holding components together under thermal cycling and internal pressure. When the flange warps, cracks, or corrodes, the sealed joint can fail — allowing combustion gases to escape into unintended areas or disrupting the airflow balance that keeps the heater running efficiently. Replacing a damaged flange promptly restores the structural and sealing integrity of the connection, keeping the heater's output clean and its combustion pathway properly contained.
Part Details
| Part Number | 5000186789 |
|---|---|
| Old Part Number | 0186789 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flange |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 200HD D Indirect Air Heater | HI200HDD | 5000620916, 5200011878 |
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.
