The Wacker Neuson Blast Tube is a genuine OEM component designed for the HI 400HD G Indirect Air Heater. Sourced directly from Wacker Neuson, this part meets the exact design and material standards of the original — ensuring a correct, like-for-like replacement in your heating unit. If your HI 400HD G is producing inconsistent heat output or showing signs of combustion inefficiency, the blast tube is a common service item that directly affects burner performance.
Key Features
- Genuine OEM Combustion Integrity — Manufactured to Wacker Neuson's original design tolerances, ensuring correct airflow geometry and combustion alignment critical to indirect-fired heater performance.
- Direct-Fit Replacement — Engineered as a drop-in replacement for the HI 400HD G, matching the original mounting configuration and tube dimensions for straightforward installation.
- Confirmed Fitment — Verified for the HI 400HD G Indirect Air Heater (part 5000186671), eliminating guesswork when ordering a service replacement.
- Restored Heat Output — A correctly functioning blast tube channels combustion airflow precisely through the heat exchanger, maintaining rated BTU output across the full operating range of the heater.
- Fuel System Safety Relevance — The blast tube sits at the heart of the combustion chamber; using the correct OEM part helps maintain proper fuel-air mixing and reduces the risk of incomplete combustion or flameout under load.
The blast tube in an indirect-fired air heater directs the forced airflow from the burner assembly through the combustion chamber and into the heat exchanger, where heat is transferred to the output air stream without mixing combustion gases into the heated air supply. This makes the blast tube essential to both heating efficiency and safe operation — a warped, cracked, or deteriorated tube can disrupt the combustion zone, cause erratic burner behavior, or allow heat to escape in unintended directions. Replacing a worn blast tube promptly restores proper combustion geometry and keeps the HI 400HD G performing at its rated capacity.
Part Details
| Part Number | 5000186671 |
|---|---|
| Old Part Number | 0186671 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Blast Tube |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
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.
