The Honda 31163-ZA5-300 Brush Spring is a genuine OEM Brush Spring designed for a wide range of Honda generators, including the EB2200, EB2500, EG1400, EG2200, EG2500, EM1600, EM1800, EM2200, EM2500, EX2200, EZ1400, and EZ2500. As a direct Honda OEM component, this spring is built to the same specification as the part that left the factory, ensuring correct tension and fit in the alternator's brush assembly. Honda supersedes parts across production runs, so confirming your unit's serial number against the fitment table before ordering is always recommended.
Key Features
- Genuine OEM Tension — sourced directly from Honda, this spring delivers the correct brush contact pressure that keeps the alternator producing consistent output voltage across the generator's operating range.
- Direct OEM Replacement — manufactured to Honda's original specification, this part drops into the brush holder assembly without rework or adaptation.
- Broad Generator Compatibility — fits the EB2200 inverter generator and a wide range of Honda conventional generators, including the EB2500, EG1400, EG2200, EG2500, EM1600, EM1800, EM2200, EM2500, EX2200, EZ1400, and EZ2500.
- Serial Number Verification Advised — Honda updates parts at production breaks, so cross-check your generator's serial number against the fitment table to confirm part number 31163-ZA5-300 is correct for your unit.
The brush spring applies constant, calibrated pressure to the carbon brushes that ride against the alternator's slip rings, maintaining steady electrical contact as the rotor spins. Without sufficient spring tension, brush contact becomes intermittent, causing voltage fluctuations or a complete loss of generator output. A fatigued or broken spring allows the brushes to lift off the slip rings under load, which is a common cause of a generator that runs but produces no power — making this small component critical to reliable electrical output.
Part Details
| Part Number | 31163-ZA5-300 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Brush Spring |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB2500, EG1400, EG2200, EG2500, EM1600, EM1800, EM2200, EM2500, EX2200, EZ1400, EZ2500 | All |
| Inverter Generator | EB2200 | 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.
