The Wacker Neuson Pressure Switch is a genuine OEM component designed for the HI 400HD D Indirect Air Heater. As a factory-sourced part, it meets the exact specifications required to maintain safe and consistent heater operation on the job. This pressure switch is a direct replacement for the original unit fitted to the HI 400HD D, ensuring correct integration with the heater's control and fuel delivery systems. Confirm your machine's model number before ordering to guarantee an accurate match.
Key Features
- Calibrated Switching Threshold: — Manufactured to the precise pressure rating required for the HI 400HD D, ensuring the control circuit responds accurately to real operating conditions.
- Genuine OEM Sourcing: — Supplied directly from Wacker Neuson, so this switch carries the same spec as the part your heater shipped with — no guesswork on compatibility.
- Direct Fitment for HI 400HD D: — Engineered specifically for the HI 400HD D Indirect Air Heater; installs into the existing mounting point and electrical connector without adaptation.
- Protects Heater Operation: — A correctly functioning pressure switch allows the burner to fire and sustain heat output; a failed switch can cause nuisance shutdowns or prevent the heater from starting altogether.
- Fuel System Safety Compliance: — Pressure switches in indirect-fired heaters serve as a critical safeguard, cutting power to the burner circuit if system pressure falls outside safe parameters — making correct specification essential.
A pressure switch monitors fluid or air pressure within the heater's system and sends a signal to the control board when pressure reaches the correct operating threshold. In an indirect-fired air heater like the HI 400HD D, this switch plays a key role in confirming that combustion air or fuel delivery is within range before allowing the burner to operate. When the switch fails or drifts out of calibration, the heater may shut down unexpectedly, fail to ignite, or run outside its intended safety envelope — making timely replacement with the correct OEM part essential for both performance and safe operation.
Part Details
| Part Number | 5000183925 |
|---|---|
| Old Part Number | 0183925 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
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.
