The Honda 31700-ZS4-003 Automatic Voltage Regulator Assembly is a genuine OEM component designed for EZ3500 and EZ5000 generators. As a direct Honda OEM part, it is manufactured to the exact specifications of the original, ensuring a proper fit and correct electrical operation in the generator's charging and output circuit. Confirm your generator's serial number against the fitment table before ordering, as Honda updates part numbers at production breaks.
Key Features
- Genuine OEM Voltage Regulation — sourced directly from Honda, this assembly provides the precise voltage sensing and output correction the EZ3500 and EZ5000 alternator system requires to hold steady AC output under varying load conditions.
- Direct-Fit Replacement — engineered to replace the original regulator assembly without modification, using the same electrical connector and mounting configuration as the factory unit.
- Covers EZ3500 and EZ5000 Generators — part number 31700-ZS4-003 is the Honda OEM reference for both the EZ3500 and EZ5000 conventional generators; verify your serial number against the fitment table to confirm the correct application.
- Stable Power Output — a functioning AVR continuously adjusts field excitation to keep output voltage consistent; a failed regulator causes fluctuating or out-of-spec voltage that can damage connected equipment or prevent the generator from producing usable power.
The Automatic Voltage Regulator Assembly is the control component responsible for maintaining steady AC output voltage on a conventional generator. It monitors the alternator's output and continuously adjusts the current supplied to the field winding, compensating for changes in load so that connected tools and appliances receive consistent voltage. When this assembly fails, output voltage can surge, drop, or become unstable — a condition that risks damage to sensitive electrical equipment and renders the generator unreliable for work-site or standby use.
Part Details
| Part Number | 31700-ZS4-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Automatic Voltage Regulator Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EZ3500, EZ5000 | 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.
