The Wacker Neuson Nozzle is a genuine OEM component designed for the HI 300HD D, HI 300D, HI 90, and HI 90HD indirect-fired diesel air heaters. As a direct OEM replacement, the meets Wacker Neuson's original design specifications, ensuring the fuel delivery geometry and spray pattern are exactly as intended for these heater models. This nozzle is the correct verified fitment across both the HI 90 and HI 300 series indirect air heater families, covering standard and heavy-duty diesel configurations.
Key Features
- OEM-Matched Spray Geometry — Genuine Wacker Neuson nozzle engineered to the exact orifice size and spray angle required for efficient, clean combustion in these indirect-fired diesel heaters.
- Drop-In Fitment Across Two Heater Families — Directly replaces the factory nozzle on HI 90, HI 90HD, HI 300D, and HI 300HD D models, connecting into the existing fuel delivery assembly without modification.
- Consistent Heat Output — A correctly functioning nozzle atomizes diesel fuel at the proper rate, enabling the heater to reach and hold its rated BTU output; a worn or clogged nozzle leads to incomplete combustion, sooting, and reduced heat delivery.
- Fuel System Safety — Precise atomization is critical to safe burner operation in indirect-fired heaters; an OEM-spec nozzle helps prevent hard starts, unburned fuel buildup, and flameout conditions on the jobsite.
- Genuine Wacker Neuson Part — Sourced directly through authorized Wacker Neuson supply channels, so the part number, dimensions, and flow rating are verified against the original build specification.
The nozzle is the final metering point in a diesel indirect-fired heater's fuel system — it atomizes pressurized diesel into a fine mist that mixes with combustion air and ignites to produce heat. The quality and condition of the nozzle directly control flame shape, combustion efficiency, and how cleanly the burner runs. When a nozzle wears, becomes partially blocked, or degrades, the result is inconsistent ignition, excessive soot buildup on the heat exchanger, reduced output, and in some cases burner lockout — all of which interrupt heating operations and increase service time.
Part Details
| Part Number | 5000186774 |
|---|---|
| Old Part Number | 0186774 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Nozzle |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
| HI 90 | HI90 | 5200019340 |
| HI 90HD | HI90HD | 5200019341 |
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.
