The Honda 31216-ZA1-013 Insulation Bush is a genuine OEM component designed for a wide range of Honda engines, generators, tillers, and riding equipment — 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 H1011, H2013, H3011, H3013, H4013, H4514, HT3810, HT3813, and HT4213 riding mowers and lawn tractors. As a genuine Honda OEM part, it is manufactured to the exact specification of the original, ensuring a direct, trouble-free installation. Confirm your machine's serial number against the fitment table before ordering, as Honda issues part supersessions at serial number breaks across a range this broad.
Key Features
- Genuine Honda OEM Quality — manufactured to Honda's exact specification, this electrical insulation bush maintains the isolation and dimensional fit the original design requires, with no guesswork on material or tolerance.
- Direct OEM Replacement — this part installs in place of the original without alteration, restoring the electrical integrity of the circuit it protects across all listed applications.
- Broad Fitment Across Honda Lineups — compatible with 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 a full lineup of Honda riding mowers and lawn tractors.
- Verify Your Serial Number — Honda updates parts at defined serial breaks; check your machine's serial number against the compatibility table to confirm this is the correct bush for your specific unit.
An insulation bush is an electrical isolator used in starter motor and charging system assemblies. It prevents unintended electrical contact between a conductive component — such as a brush holder, terminal, or stud — and the surrounding housing or case, keeping current on its intended path. When this bush cracks, deforms, or deteriorates, it can cause short circuits, intermittent starting faults, or electrical system failures, making timely replacement essential to keeping the machine's electrical system functioning as designed.
Part Details
| Part Number | 31216-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.
