The Wacker Neuson Capacitor is a genuine OEM component designed for the HI 300HD D, HI 400HD D, and HI 400HD G indirect-fired air heaters. As a direct factory replacement, this capacitor restores correct electrical function to the heater's motor circuit, ensuring the unit starts and runs as intended. It is verified for use across the HI 300HD and HI 400HD series, making it the straightforward choice when servicing these units in the field or shop.
Key Features
- Correct Capacitance Rating — Genuine OEM specification ensures the capacitor delivers the precise electrical charge required to start and run the heater motor without overload or failure.
- Drop-In Electrical Replacement — Matches the original mounting footprint and terminal connections for a direct swap with no rewiring or adapter hardware needed.
- Confirmed Fitment Across HI 300HD and HI 400HD Series — Verified for the HI 300HD D, HI 400HD D, and HI 400HD G indirect-fired air heaters.
- Restored Motor Starting Performance — A failed or weak capacitor causes hard starts, motor humming, or complete failure to ignite the heater; replacing it brings the unit back to full cold-weather output.
- Genuine Wacker Neuson OEM Part — Sourced directly through authorized Wacker Neuson supply channels, so the part number, fit, and electrical rating are backed by the manufacturer.
A capacitor in an indirect-fired air heater stores and releases an electrical charge to provide the motor with the surge of current it needs to start spinning — a function that standard circuit power alone cannot deliver. Once the motor is running, the capacitor continues to regulate phase shift and running torque, keeping the blower operating smoothly and efficiently. When a capacitor degrades or fails, the motor may hum without turning over, trip a breaker, or refuse to start entirely, leaving the heater unable to circulate warm air on the jobsite.
Part Details
| Part Number | 5000183908 |
|---|---|
| Old Part Number | 0183908 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Capacitor |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
| 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.
