The Honda 31106-ZB4-811 Brush Holder Assembly is a genuine OEM component designed for EW140, EW171, and EXW171 welder generators. As a direct Honda OEM replacement, this assembly is built to the same specification as the original unit, ensuring the carbon brushes are held at the correct angle and pressure against the slip rings for proper electrical output. Honda supersedes parts at serial breaks, so confirm your unit's serial number against the fitment table before ordering to make sure part number 31106-ZB4-811 is the right match for your machine.
Key Features
- Genuine OEM Electrical Integrity — maintains the correct brush contact geometry and spring tension that accurate welding and generating output depend on, unlike worn or mismatched aftermarket holders that can cause arcing and uneven brush wear
- Direct OEM Replacement — sourced directly from Honda and built to the same specification as the original, so this assembly installs into EW140, EW171, and EXW171 welder generators without rework or adaptation
- Welder Generator Fitment — confirmed for the EW140, EW171, and EXW171; check your serial number against the fitment table, as Honda issues part revisions at specific serial breaks
- Restores Consistent Output — a worn or damaged brush holder allows the brushes to lose contact with the slip rings, causing voltage fluctuations that affect both the generator and welding circuits; replacing this assembly restores steady electrical performance
The Brush Holder Assembly positions and retains the carbon brushes that ride against the rotating slip rings inside the alternator of the welder generator. The brushes carry excitation current to the rotor field winding, which is what allows the alternator to produce the voltage needed for both power generation and welding output. When the holder wears or breaks, brush contact becomes inconsistent, leading to erratic voltage, weak welding arc, or complete loss of output — making this a critical component to inspect and replace as part of routine generator servicing.
Part Details
| Part Number | 31106-ZB4-811 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Brush Holder Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Welder Generator | EW140, 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.
