The Wacker Neuson Combustion Chamber is a genuine OEM component designed for the HI 400HD G and HI 400HD D indirect-fired air heaters. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. It is confirmed to fit the HI 400HD G and HI 400HD D series, making it the correct choice when an exact-match replacement is required. Replacing a worn or damaged combustion chamber with the genuine OEM part restores the heater to its intended operating condition and output efficiency.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original material and dimensional specifications, ensuring the combustion chamber withstands the sustained high-heat environment of an indirect-fired heater cycle after cycle.
- Direct-Fit Replacement — Engineered to install in the same position and orientation as the original, with matching mounting interfaces for a straightforward swap during service.
- Confirmed Fitment — Compatible with the HI 400HD G and HI 400HD D indirect-fired air heaters; always verify your model number before ordering.
- Sustained Heat Output — A properly functioning combustion chamber contains and directs the burn efficiently, maintaining the full rated heat output of the HI 400HD series and preventing incomplete combustion.
- Combustion Integrity — In a heating application, a compromised combustion chamber can allow exhaust gases to contaminate the heated air stream — using the correct OEM replacement maintains proper separation of combustion gases from the output airflow.
The combustion chamber is the core enclosure where fuel ignites and burns inside an indirect-fired air heater. It contains and directs the flame and combustion gases through the heat exchanger, allowing clean heated air to be discharged into the work area without mixing with exhaust byproducts. When the combustion chamber cracks, warps, or burns through, the heater loses efficiency, may produce inconsistent heat output, and risks allowing combustion gases to enter the airflow — making timely replacement critical for both performance and safe operation.
Part Details
| Part Number | 5000186674 |
|---|---|
| Old Part Number | 0186674 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Combustion Chamber |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
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.
