The Wacker Neuson Diffuser is a genuine OEM component designed for the HDR 155 and HDR 45 direct-fired radiant heaters. Sourced directly from Wacker Neuson, this OEM part is manufactured to the same specification as the original, ensuring it installs and performs exactly as intended. Confirmed fitment covers the HDR 155 Direct Fired Radiant Heater and the HDR 45, making it the correct choice when restoring either unit to full operating condition. Verify your model number against the fitment data before ordering to ensure an exact match.
Key Features
- OEM Heat Distribution Accuracy — Manufactured to the original combustion airflow specification, ensuring the diffuser spreads heat output evenly and maintains rated BTU performance across the burner face.
- Direct Drop-In Replacement — Engineered to the original mounting dimensions, this diffuser locates and seats correctly within the heater assembly without rework or adaptation.
- Confirmed Fitment for HDR Series Heaters — Compatible with the HDR 155 Direct Fired Radiant Heater and the HDR 45, covering both units in the Wacker Neuson direct-fired radiant heater lineup.
- Restores Full Heating Efficiency — A worn or damaged diffuser disrupts airflow distribution and reduces radiant output. Replacing it with a correctly spec'd OEM part brings the heater back to its full heating capacity.
- Combustion Safety Integrity — In a direct-fired heater, proper diffuser function is essential to controlled, stable combustion. An OEM-spec diffuser helps maintain the correct flame pattern and prevents uncontrolled heat concentration.
The diffuser is a core component within a direct-fired radiant heater's burner assembly. Its job is to distribute the airflow evenly across the burner face, which controls how the flame develops and how heat radiates outward from the unit. When the diffuser is damaged, warped, or blocked, airflow becomes uneven — this can cause hot spots, inconsistent heat output, or unstable combustion that reduces the heater's effectiveness on the worksite. Replacing a failed diffuser promptly restores the balanced airflow the burner depends on for safe, efficient radiant heat output.
Part Details
| Part Number | 5200011791 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diffuser |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HDR 155 Direct Fired Radiant Heater | HDR155 | 5200007530 |
| HDR 45 | HDR45 | 5200013800 |
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.
