The Honda 31630-Z1C-D21 Charge Coil Assembly is a genuine OEM component designed for Honda EM3800, EM4000, EM5000, and EM6500 generators. As a direct Honda OEM replacement, this Charge Coil Assembly is manufactured to the same specifications as the original, ensuring it integrates correctly with your generator's charging circuit. Confirm your generator's model and serial number against the fitment table before ordering, as Honda supersedes parts at production breaks.
Key Features
- Genuine Honda OEM Quality — manufactured to the same electrical output specifications as the original, ensuring the charging circuit delivers consistent current to the battery system without undercharging or overcharging.
- Exact-Match Replacement — part number 31630-Z1C-D21 drops in as a direct replacement, with the same winding configuration and connector interface as the original coil assembly.
- Broad Generator Compatibility — fits Honda EM3800, EM4000, EM5000, and EM6500 generators, covering a wide range of Honda conventional generator models in this output class.
- Serial Number Verification Recommended — Honda revises parts at specific production points, so check your serial number against the fitment table to confirm this assembly is the correct one for your unit.
- Charging System Reliability — a functioning charge coil keeps the battery topped off during operation; a failed coil leaves the battery unable to sustain the electric start system and any DC accessory loads the generator supports.
The charge coil is a stator winding that sits within the generator's magneto assembly, positioned around the rotating flywheel magnets. As the engine runs, the spinning magnets induce an alternating current in the coil windings, which is then rectified to provide DC voltage for charging the generator's battery. When the charge coil fails — whether through winding breakdown, insulation failure, or physical damage — the battery receives no charge during operation, leading to a progressively weakening electric start and eventual inability to crank the engine.
Part Details
| Part Number | 31630-Z1C-D21 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Charge Coil Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EM3800, EM4000, EM5000, EM6500 | 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.
