The Honda 31700-ZF5-003 Silicon Rectifier is a genuine OEM component designed for GXV340 and GXV390 vertical shaft engines. As a factory-original part, it is built to the same specification as the unit installed at the point of manufacture, ensuring a direct, compatible replacement. Honda supersedes charging-system components at serial breaks, so confirm your engine's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Charging-System Integrity — factory-original construction ensures the rectifier converts AC current to DC at the voltage and current ratings the GXV340 and GXV390 charging circuits require, protecting connected accessories and the battery.
- Direct OEM Replacement — part number 31700-ZF5-003 is a drop-in replacement for GXV340 and GXV390 engines, connecting to the existing wiring harness without modification.
- Vertical Shaft Engine Fitment — designed specifically for GXV340 and GXV390 vertical shaft engines; verify your serial number against the fitment table to confirm the correct rectifier for your production run.
- Protects the Charging Circuit — a failed rectifier allows unregulated AC voltage to reach DC-only components, causing wider electrical damage; replacing a faulty unit restores clean, stable DC output to the system.
The silicon rectifier is the component in the engine's charging circuit responsible for converting the alternating current produced by the charging coil into the direct current used to power accessories and maintain battery charge. Without a functioning rectifier, the engine's electrical output is unusable — connected devices receive irregular voltage and can be damaged. When the rectifier fails, symptoms typically include a battery that will not hold charge, erratic electrical behavior, or a complete loss of DC output from the engine.
Part Details
| Part Number | 31700-ZF5-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Silicon Rectifier |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV340, GXV390 | 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.
