The Honda 31112-ZB4-003 is a genuine OEM Generator Cooling Fan designed for a wide range of Honda generators and welder generators, including the EB3500, EB5000, EB6500, EG3500, EG5000, EM3500, EM5000, EM6000, EW140, EW171, EX3300, EX4500, EXW171, EZ3500, and EZ5000. As a direct Honda OEM component, this cooling fan is manufactured to the same specifications as the original part it replaces, ensuring proper airflow and thermal management across every compatible unit. Confirm your unit's serial number against the fitment table before ordering, as Honda periodically supersedes parts at production breaks.
Key Features
- Genuine OEM Airflow Performance — manufactured by Honda to deliver the correct blade pitch and rotational balance needed to maintain consistent cooling across your generator's operating load range
- Direct-Fit Replacement — engineered to the original dimensions and mounting interface, so installation follows the same procedure as the factory part with no alterations
- Broad Honda Generator Coverage — fits Honda conventional generators and welder generators including the EB, EG, EM, EW, EX, and EZ series; check your serial number against the compatibility table to confirm the correct application
- Critical Thermal Management — a worn or damaged cooling fan reduces airflow over the alternator and engine, leading to overheating under load; replacing it promptly protects both output quality and internal components
The generator cooling fan draws air through the generator's shroud and directs it across the alternator windings and engine to dissipate heat produced during operation. Without adequate airflow, internal temperatures rise quickly under load, which can degrade winding insulation, shorten component life, and cause the generator to shut down on thermal overload. Replacing a cracked, broken, or imbalanced fan restores proper cooling and allows the generator to sustain its rated output without thermal stress.
Part Details
| Part Number | 31112-ZB4-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Generator Cooling Fan |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB6500 | 1002195-9999999 |
| Generator | EX3300 | 1002236-9999999 |
| Generator | EB3500, EB5000, EG3500, EG5000, EM3500, EM5000, EM6000, EX4500, EZ3500, EZ5000 | All |
| Welder Generator | EW140 | 1002412-9999999 |
| Welder Generator | EW171, EXW171 | 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.
