The Wacker Neuson Air Damper is a genuine OEM component designed for the HI 400HD G, HI 400HD D, HI 120, and HI 120HD indirect-fired air heaters. As a direct OEM replacement, this part is manufactured to the same specification as the original, ensuring correct fit and function within Wacker Neuson's HI-series heater lineup. Whether you're servicing a jobsite heater ahead of a cold-weather pour or replacing a worn damper on a HI 120HD, part number is the correct factory-sourced solution. Cross-reference your model and serial number before ordering to confirm this is the right part for your unit.
Key Features
- OEM Airflow Control Spec — Manufactured to Wacker Neuson's original tolerances for the air damper assembly, ensuring proper combustion airflow regulation in HI-series indirect heaters.
- Drop-In Replacement — Mounts directly in place of the original damper with no reworking of the heater housing or air intake pathway required.
- Broad HI-Series Compatibility — Confirmed fitment across four models: HI 400HD G, HI 400HD D, HI 120, and HI 120HD indirect-fired air heaters.
- Consistent Heat Output — A functioning air damper maintains the correct air-to-fuel ratio for efficient combustion; a failed or stuck damper can cause incomplete burn, sooting, or erratic heat delivery.
- Combustion Safety Relevance — Proper damper operation is critical for safe, controlled combustion in indirect-fired heaters; using the correct OEM part supports safe operation in enclosed or semi-enclosed work environments.
The air damper controls the volume of combustion air entering the burner assembly of an indirect-fired heater. By regulating airflow, it helps maintain the correct air-to-fuel mixture needed for clean, efficient combustion and steady heat output. When the damper becomes worn, warped, or fails to seat properly, the heater may produce inconsistent heat, excessive exhaust output, or fail to ignite reliably — making timely replacement essential for continuous cold-weather operations.
Part Details
| Part Number | 5000183958 |
|---|---|
| Old Part Number | 0183958 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Air Damper |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
| HI 120 | HI120 | 5200019342 |
| HI 120HD | HI120HD | 5200019343 |
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.
