The Wacker Neuson Transformer is a genuine OEM component designed for the HI 90HD and HI 120 indirect-fired air heaters. As a factory-sourced part, it is built to the exact electrical specifications required for proper ignition system operation in these heaters. This transformer is the correct direct replacement when servicing HI 90HD or HI 120 units that have experienced ignition failure or inconsistent burner starts.
Key Features
- OEM Electrical Precision — Manufactured to the exact output voltage and impedance specs required by the HI 90HD and HI 120 ignition circuits, ensuring consistent spark delivery every time.
- Direct Drop-In Replacement — Matches the original mounting configuration and wiring connections on both supported heater models, so installation follows the standard service procedure without modification.
- Confirmed Fitment — Verified for the Wacker Neuson HI 90HD and HI 120 indirect-fired air heater models.
- Consistent Burner Ignition — A correctly functioning transformer delivers the high-voltage pulse needed to reliably light the burner; a weak or failed unit leads to hard starts, misfires, or a heater that won't run at all.
- Electrical Safety Compliance — As a core ignition electrical component, using a genuine OEM transformer maintains the correct insulation rating and output spec, keeping the heater operating within its designed safety parameters.
The transformer in an indirect-fired air heater is responsible for stepping up incoming voltage to generate the high-voltage spark that ignites the burner. Without a properly functioning transformer, the ignition system cannot fire reliably, leaving the heater unable to produce heat — a critical issue on cold-weather jobsites where continuous operation is essential. When a transformer degrades or fails, symptoms typically include intermittent ignition, repeated lockout faults, or a complete failure to start the burner cycle.
Part Details
| Part Number | 5200025116 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Transformer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 90HD | HI90HD | 5200019341 |
| HI 120 | HI120 | 5200019342 |
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.
