The Honda 31217-ZA1-013 Insulation Bush is a genuine OEM component designed for a wide range of Honda engines, generators, tillers, and riding mowers, including GXV270, GXV340, and GXV390 vertical shaft engines, G300 and G400 horizontal shaft engines, the GX360 horizontal shaft engine, EMS4000, EMS4500, ES4500, ES6500, EV4000, and EX5500 generators, the FR700 tiller, and H-series and HT-series riding mowers and lawn tractors. As a genuine Honda part, it is manufactured to the same specifications as the original, ensuring a direct fit without guesswork. Honda supersedes parts at specific serial breaks, so always verify your unit's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Construction — sourced directly from Honda, this Insulation Bush matches the original component exactly in form and function, delivering the fit and service life Honda designs for.
- Broad Compatibility — fits an extensive range of Honda equipment, including GXV270, GXV340, and GXV390 vertical shaft engines, G300, G400, and GX360 horizontal shaft engines, multiple Honda generators, the FR700 tiller, and H-series and HT-series riding mowers and lawn tractors.
- Serial Number Verification Recommended — Honda updates parts across production runs; confirm your machine's serial number against the fitment table to ensure this is the correct bush for your unit.
- Electrical Integrity — a worn or degraded insulation bush compromises the separation between conductive components, which can lead to shorts or erratic electrical behavior across the starter circuit.
The Insulation Bush is an electrical insulator fitted within the starter motor assembly. Its role is to maintain isolation between conductive components inside the starter, preventing unintended electrical contact that could cause shorts or starter malfunction. When this bush degrades, cracks, or deforms with age and heat, electrical performance in the starter circuit suffers — resulting in sluggish or failed starting. Replacing it with a genuine Honda part restores proper electrical separation and dependable starter operation.
Part Details
| Part Number | 31217-ZA1-013 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Insulation Bush |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EMS4000, EMS4500 | 1061324-9999999 |
| Generator | ES4500, EV4000 | 1388993-9999999 |
| Generator | ES6500, EX5500 | All |
| Horizontal Shaft Engine | G300 | 1334392-9999999 |
| Horizontal Shaft Engine | G400 | 1388993-9999999 |
| Horizontal Shaft Engine | GX360 | All |
| Lawn Tractor | HT3810 | 1388993-9999999 |
| Lawn Tractor | H2013, H4013, H4514, HT3813, HT4213 | All |
| Riding Mower | H1011, H3011, H3013 | All |
| Tiller | FR700 | All |
| Vertical Shaft Engine | GXV270, GXV340, GXV390 | 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.
