The Wacker Neuson Pressure Switch is a genuine OEM component designed for the HI 400HD G Indirect Air Heater. Sourced directly from Wacker Neuson, this pressure switch carries the exact specifications required by the HI 400HD G, ensuring the heater's safety and control systems operate as intended. Whether you're restoring a unit after a fault or performing proactive maintenance, part number is the correct, factory-matched replacement for this application.
Key Features
- Exact OEM Pressure Rating: — Manufactured to the precise switching threshold required by the HI 400HD G burner system, so the heater responds correctly to pressure changes without nuisance trips or missed shutdowns.
- Direct-Fit Replacement: — Matches the original mounting configuration and electrical connection of the factory-installed switch, allowing a straightforward swap without adapters or modifications.
- Confirmed Fitment: — Verified for the HI 400HD G Indirect Air Heater (Wacker Neuson model series HI 400HD G).
- Protects Heater Operation: — A correctly functioning pressure switch keeps the burner and airflow systems in sync; a failed or out-of-spec switch can cause the unit to shut down unexpectedly or, worse, fail to shut down when it should.
- Fuel System Safety Component: — As part of the heater's fuel and combustion control circuit, using a genuine OEM switch with the correct actuation spec is critical to safe, code-compliant operation on the jobsite.
A pressure switch monitors system pressure within the heater's fuel or airflow circuit and sends a signal to the control board to either permit or interrupt heater operation. It acts as a safeguard, confirming that the correct operating conditions are present before the burner is allowed to fire or continue running. When a pressure switch wears out or fails, the heater may refuse to start, shut off mid-cycle, or — in a failed-closed scenario — lose the protection that prevents unsafe operation under low-pressure conditions.
Part Details
| Part Number | 5000186668 |
|---|---|
| Old Part Number | 0186668 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
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.
