The Honda 31750-ZDX-003 Regulator Rectifier Assembly (17A) is a genuine OEM component designed for GX700 and GX800 horizontal shaft engines. As a direct OEM replacement, this assembly carries Honda's exact specifications for voltage regulation and current output, ensuring the charging system performs exactly as it did when the engine left the factory. Honda supersedes parts at serial breaks, so confirm your engine's serial number against the fitment table before ordering to make sure part number 31750-ZDX-003 is the correct unit for your machine.
Key Features
- OEM Charging System Accuracy — genuine Honda construction ensures the 17A output rating and regulation threshold match the original specification, maintaining correct system voltage under varying electrical loads
- Direct OEM Replacement — this assembly connects to the existing wiring harness and mounts in the original position on GX700 and GX800 engines, requiring no adaptation
- GX700 and GX800 Fitment — engineered specifically for these large-displacement horizontal shaft engines; confirm your serial number against the fitment table before ordering
- Protects Electrical Components — a functioning regulator rectifier converts AC output to stable DC and caps voltage spikes; a failed unit can overcharge the battery or leave the electrical system without power entirely
The regulator rectifier assembly serves two functions in a single unit. The rectifier side converts the alternating current produced by the engine's charging coil into direct current suitable for charging a battery and powering DC accessories. The regulator side holds that voltage within a safe operating range, preventing overcharge that would damage the battery and downstream electrical components. When this assembly fails, symptoms typically include a dead or chronically undercharged battery, erratic instrument readings, or a complete loss of DC electrical output — all of which leave the equipment it powers unable to operate any battery-dependent systems.
Part Details
| Part Number | 31750-ZDX-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Regulator Rectifier Assembly (17A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX700, GX800 | 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.
