The Wacker Neuson Capacitor is a genuine OEM component designed for the HI400HD G, HI300HD D, HI400HD D, and HI300D series indirect-fired air heaters. Sourced directly through Wacker Neuson's authorized parts supply chain, this capacitor meets the exact electrical specifications required by these heater models. It is a direct-fit replacement that installs into the existing mounting position without modification, ensuring a straightforward service repair on your HI-series heater.
Key Features
- Correct Capacitance Rating — Genuine OEM construction ensures this capacitor delivers the precise electrical charge and discharge characteristics required to start and run the blower motor in HI-series indirect air heaters.
- Direct-Fit Replacement — Engineered to match the original terminal configuration and housing dimensions, allowing the 5000186745 to seat and connect exactly as the factory-installed unit did.
- Broad HI-Series Compatibility — Confirmed fitment across the HI400HD G, HI300HD D, HI400HD D, and HI300D indirect-fired air heaters, covering both gas and diesel variants in the HD lineup.
- Restored Blower Motor Function — A failed capacitor prevents the blower motor from reaching operating speed or starting at all; replacing it with the correct OEM part restores full heat output and airflow performance.
- Electrical Safety Compliance — As a genuine Wacker Neuson OEM part, the 5000186745 meets the original voltage and capacitance tolerances specified for these heaters, reducing the risk of motor burnout or electrical fault caused by an out-of-spec component.
A capacitor in an indirect-fired air heater serves as the start and run capacitor for the blower motor, storing and releasing an electrical charge that helps the motor achieve and maintain its correct operating speed. Without a functioning capacitor, the blower motor may fail to start, run erratically, or draw excessive current — which can lead to motor overheating or a complete loss of heat output. Replacing a faulty capacitor with the correct OEM specification part restores normal airflow, combustion efficiency, and consistent heating performance in demanding jobsite conditions.
Part Details
| Part Number | 5000186745 |
|---|---|
| Old Part Number | 0186745 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Capacitor |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 400HD G Indirect Air Heater | HI400HD G | 5000620701 |
| HI 300HD D Indirect Air Heater, Diesel | HI300HDD | 5000620867 |
| HI 400HD D Indirect Air Heater | HI400HDD | 5000620868 |
| HI 300D, HEATER-INDIRECT, DIESEL, -20° | HI300D | 5000620866 |
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.
