The Wacker Neuson Air Duct 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 factory replacement, this air duct restores the original airflow path within the heater, ensuring the unit operates exactly as engineered. Fitment covers both the HI 400HD and HI 120 series, making the a stocked part worth keeping on hand for fleets running multiple Wacker Neuson heater models.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original material and dimensional specifications, ensuring the duct maintains correct airflow geometry and heat-resistant integrity throughout the heating season.
- Direct Drop-In Replacement — Designed to mount and connect exactly like the original, aligning with existing duct interfaces on the HI 400HD G, HI 400HD D, HI 120, and HI 120HD without modification.
- Broad HI Series Fitment — A single part number covers both the HI 400HD and HI 120 model families, simplifying parts inventory for contractors and rental fleets operating multiple indirect-fired heater units.
- Sustained Heat Output — A properly seated air duct channels combustion-heated air efficiently through the unit; a cracked, collapsed, or missing duct causes heat loss, uneven output, and potential overheating of internal components.
- Combustion Safety Integrity — In indirect-fired heaters, maintaining a sealed and correctly routed air duct is essential to keeping combustion gases separated from the discharge airstream — a critical safety function in enclosed workspaces.
The air duct in an indirect-fired heater serves as the channel that directs heated air from the heat exchanger to the discharge outlet, while keeping combustion exhaust gases completely isolated from the air being delivered to the work area. This separation is what makes indirect heaters safe for use inside buildings, tents, and enclosed job sites. When the air duct becomes cracked, warped, or damaged, the heater loses efficiency, output temperatures drop, and in severe cases, exhaust gases can contaminate the heated airstream — making prompt replacement with a correct OEM part like the Wacker Neuson 5000183895 essential.
Part Details
| Part Number | 5000183895 |
|---|---|
| Old Part Number | 0183895 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Air Duct |
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.
