The Wacker Neuson Solenoid Valve is a genuine OEM component designed for the HI110D, HI200D, and HI300D series diesel indirect air heaters. As a direct factory replacement, this solenoid valve restores precise fuel flow control to your heater, ensuring consistent ignition and reliable heat output in demanding jobsite conditions. Compatible across multiple HI-series configurations — including HD and standard variants — this part covers a wide range of Wacker Neuson indirect and direct-fired heater units. Keep your crew warm and your operation running through cold-weather work with the correct OEM part.
Key Features
- Genuine OEM Fuel Metering Accuracy — Factory-sourced valve maintains the exact flow rate and pressure rating specified for Wacker Neuson HI-series diesel heaters, preventing over-fueling or fuel starvation.
- Direct Bolt-In Replacement — Matches the original port sizing, connector type, and mounting configuration for a straightforward swap with no improvised adapters.
- Broad HI-Series Compatibility — Fits HI110D, HI110HD D, HI200D, HI200HD D, HI300D, HI300HD D, and HDR155 heater models, covering both indirect and direct-fired diesel configurations.
- Restores Clean Ignition Cycle — A worn or stuck solenoid valve causes hard starts, incomplete combustion, or heater lockout; replacing it brings ignition timing and fuel delivery back into spec.
- Fuel System Safety — The solenoid valve is a primary shutoff component in the fuel circuit; using a correctly rated OEM part ensures the heater cuts fuel reliably on shutdown and during fault conditions.
The solenoid valve in a diesel indirect air heater acts as an electrically controlled gate in the fuel supply line. When the heater's control board calls for heat, it energizes the solenoid, opening the valve to allow diesel fuel to flow to the burner assembly. When the setpoint is reached or the unit shuts down, the solenoid closes and cuts off fuel immediately. If the valve sticks open, the heater risks over-fueling and runaway combustion; if it fails to open, the burner cannot ignite and the unit will fault out — leaving workers without heat in cold-weather conditions.
Part Details
| Part Number | 5000186782 |
|---|---|
| Old Part Number | 0186782 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Solenoid Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 110HD D Indirect Air Heater, Diesel | HI110HD D | 5000620864 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
| HI 110D, HEATER-INDIRECT, DIESEL, -20° | HI110D | 5000620915 |
| HI 200 D Indirect Air Heater | HI200D | 5000620865, 5200011877 |
| HI 200HD D Indirect Air Heater | HI200HDD | 5000620916, 5200011878 |
| HDR 155 Direct Fired Radiant Heater | HDR155 | 5200007530 |
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.
