The Honda 31750-Z2E-013 Regulator Rectifier Assembly is a genuine OEM component designed for GX440 horizontal shaft engines. Sourced directly from Honda, this assembly carries the exact specifications Honda engineers built into the original, ensuring the electrical system performs as intended. If your GX440 engine is showing signs of charging failure, battery drain, or erratic electrical output, this part is the factory-correct replacement to restore proper operation.
Key Features
- Genuine Honda OEM Quality — manufactured to the same electrical specifications as the original unit, ensuring correct voltage regulation and rectification for the GX440 charging system.
- Direct OEM Replacement — this assembly is engineered to replace the original component without modification, plugging directly into the existing wiring harness on your GX440 engine.
- GX440 Fitment — designed specifically for GX440 horizontal shaft engines; confirm your engine's serial number against the fitment table to ensure this is the correct assembly for your serial range.
- Protects Downstream Electrical Components — a properly functioning regulator rectifier delivers stable, controlled DC voltage; a failed unit can overcharge or undercharge connected systems, shortening the life of batteries and electrical accessories.
The Regulator Rectifier Assembly serves two functions in the engine's electrical system. The rectifier converts the raw AC current produced by the engine's charging coil into DC current that can charge a battery and power DC accessories. The regulator then controls the output voltage, preventing it from climbing too high under varying engine speeds and loads. When this assembly fails, the engine may no longer charge a connected battery, or it may deliver unregulated voltage that damages sensitive electrical components — making it one of the most important parts in the charging circuit to replace with a genuine OEM unit.
Part Details
| Part Number | 31750-Z2E-013 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Regulator Rectifier Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX440 | All |
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.
