The Honda 31750-Z6L-004 Regulator Rectifier Assembly (30A) is a genuine OEM component designed for GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines, as well as GXV630, GXV660, and GXV690 vertical shaft engines. As a direct Honda OEM part, this assembly matches the original unit exactly, ensuring the charging output your engine's electrical system depends on is restored to spec. Confirm your engine's serial number against the fitment table before ordering, as Honda revises part numbers at production breaks across these series.
Key Features
- OEM Charging Accuracy — genuine Honda construction delivers the correct 30-amp regulated output, protecting connected electrical loads from under- or over-voltage conditions
- Direct OEM Replacement — plug-and-play fit using the original wiring connectors; no splicing or adapter harnesses required
- Broad Engine Compatibility — covers GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines and GXV630, GXV660, and GXV690 vertical shaft engines, including both orientations of Honda's large-displacement twin-cylinder lineup
- Serial Number Verification Recommended — Honda updates electrical components at production breakpoints; check your engine's serial number against the fitment table to confirm this is the correct assembly for your unit
- Protects Downstream Electrical Components — a failed regulator rectifier delivers uncontrolled voltage that can damage batteries, ignition modules, and other connected accessories; replacing it promptly preserves the integrity of the entire charging circuit
The Regulator Rectifier Assembly performs two jobs in a single unit. The rectifier side converts the alternating current produced by the engine's charging coil into direct current usable by the battery and electrical accessories. The regulator side then holds that DC output at a stable voltage regardless of engine speed, preventing overcharging at high rpm or undercharging at idle. When this assembly fails, symptoms range from a battery that won't hold a charge to erratic electrical behavior or a completely dead charging circuit — all of which leave the engine unable to sustain battery-dependent functions during operation.
Part Details
| Part Number | 31750-Z6L-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Regulator Rectifier Assembly (30A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX630, GX660, GX690, GX700, GX800 | All |
| Vertical Shaft Engine | GXV630, GXV660, GXV690 | 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.
