The Wacker Neuson Nozzle is a genuine OEM component designed for the HI 300HD D and HI 200HD D series diesel indirect-fired air heaters. Sourced directly from Wacker Neuson, this nozzle carries the exact specifications required to maintain consistent fuel atomization and combustion performance in your heater. It is a direct-fit replacement for the HI 300HD D and HI 200HD D models, ensuring proper installation without modification. When your heater is burning unevenly, failing to ignite reliably, or producing excessive smoke, a worn or clogged nozzle is a common cause — and replacing it with the correct OEM part restores proper operation quickly.
Key Features
- Engineered Atomization Accuracy — Machined to the precise orifice size and spray angle required for clean, consistent fuel combustion in diesel indirect-fired heaters.
- Genuine OEM Quality — Produced to Wacker Neuson's original design specifications, ensuring the nozzle delivers the correct fuel flow rate and spray pattern every time.
- Direct-Fit Replacement — Designed to seat and thread directly into the burner assembly of compatible HI series heaters, matching the original mounting configuration.
- Confirmed Fitment — Compatible with HI 300HD D and HI 200HD D diesel indirect air heaters, covering multiple production variants across these series.
- Combustion Efficiency — A correctly functioning nozzle keeps fuel delivery optimized, supporting full heat output and clean burn — critical for maintaining safe, effective heating on cold-weather job sites.
- Fuel System Safety — A degraded or incorrect nozzle can cause incomplete combustion, fuel leakage, or hard starting; replacing with the OEM-spec part keeps the burner operating within its intended safe parameters.
The nozzle is the final point of fuel delivery in a diesel-fired heater's burner assembly. It atomizes pressurized fuel into a fine mist that mixes with combustion air and ignites to produce heat. The size, shape, and condition of the nozzle directly control the spray pattern and fuel flow rate — if the nozzle clogs, wears, or is substituted with an incorrect size, the burner may fail to light, run inefficiently, produce soot, or cycle on and off erratically. Replacing a worn nozzle with the correct OEM part, part number 5000186791, is one of the most impactful routine maintenance steps you can take to keep a diesel indirect heater running at full output.
Part Details
| Part Number | 5000186791 |
|---|---|
| Old Part Number | 0186791 |
| 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 200HD D Indirect Air Heater | HI200HDD | 5000620916, 5200011878 |
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.
