The Honda 31200-ZE8-003 Starter Motor Assembly is a genuine OEM component designed for GXV340 and GXV390 vertical shaft engines, as well as the H3011 and H3013 riding mowers and the H4013 lawn tractor. As a direct Honda OEM replacement, this assembly delivers the exact electrical and mechanical specifications Honda engineered into the original unit. Confirm your machine's serial number against the fitment table before ordering, as Honda updates part numbers at serial production breaks and this assembly covers specific serial ranges within the listed models.
Key Features
- Genuine Honda OEM Quality — engineered to the same electrical output and engagement specifications as the original starter motor, ensuring the cranking torque and draw characteristics Honda designed for these engines are fully maintained
- Direct OEM Replacement — this assembly replaces the complete original unit on GXV340 and GXV390 vertical shaft engines and on H3011, H3013, and H4013 equipment, reinstating proper cold and warm-start performance without adaptation
- Serial Number Verification Recommended — Honda supersedes starter components at production serial breaks, so cross-check your unit's serial number against the fitment table to confirm this is the correct assembly for your machine
- Restores Reliable Engine Cranking — a worn or failing starter motor leads to slow cranking, failure to engage, or a complete no-start condition; replacing it with this genuine assembly returns the engine to its designed starting behavior
The starter motor assembly is an electric motor that cranks the engine to initiate combustion when the ignition is engaged. It draws power from the battery, spins a drive gear that engages the engine's ring gear, and rotates the crankshaft until the engine fires and runs on its own. On vertical shaft engines like the GXV340 and GXV390, and on the riding and tractor equipment they power, a degraded starter motor is a common cause of intermittent or complete no-start conditions — replacing the assembly with part number 31200-ZE8-003 restores the full starting capability Honda built into these machines.
Part Details
| Part Number | 31200-ZE8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Starter Motor Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | H4013 | All |
| Riding Mower | H3011, H3013 | All |
| Vertical Shaft Engine | GXV340 | 2030118-9999999 |
| Vertical Shaft Engine | 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.
