The Wacker Neuson Knob is a genuine OEM component designed for the HDR 115 Direct Fired Radiant Heater. Sourced directly from Wacker Neuson, this knob matches the original part exactly — same dimensions, same material, same fit as the component installed at the factory. If your HDR 115 has a damaged, cracked, or missing knob, part number is the correct replacement to restore full control functionality.
Key Features
- OEM Material Match — Manufactured to the same material and dimensional specification as the original, ensuring the correct grip feel and rotational resistance for confident operator control.
- Direct Drop-In Replacement — Mounts directly onto the existing control shaft of the HDR 115 with no modification to the heater or surrounding hardware.
- Confirmed HDR 115 Fitment — Verified fit for the HDR 115 Direct Fired Radiant Heater, so you can order with confidence knowing this is the right part for your machine.
- Restores Precise Operator Control — A worn or broken knob can make it difficult to accurately set or adjust heater output; replacing it promptly keeps settings dialed in and operation straightforward.
- Fuel System Safety — On a direct-fired radiant heater, control knobs interact directly with the fuel or ignition circuit; using the correct OEM part ensures the control mechanism operates as designed and maintains safe, predictable adjustment.
The knob on the HDR 115 Direct Fired Radiant Heater serves as the primary operator interface for adjusting heater output or fuel flow settings. It translates a simple hand movement into a precise mechanical input on the control valve or regulator beneath it. When a knob cracks, breaks, or strips at the shaft interface, accurate adjustment becomes difficult or impossible — which on a fuel-burning heater can compromise both comfort and safe operation on the worksite.
Part Details
| Part Number | 5100020438 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Knob |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HDR 115 Direct Fired Radiant Heater | HDR115 | 5100018592 |
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.
