The Honda 31610-Z5K-821ZA Control Box Assembly (3A) (Black) is a genuine OEM Control Box Assembly designed for GX240 and GX270 horizontal shaft engines. As a factory-original component, this assembly is manufactured to the exact specifications Honda requires for these engines, ensuring a direct, trouble-free installation. Confirm the 3A rating and Black color designation match your existing unit before ordering, as Honda lists multiple control box variants across its engine lineup, and your serial number will confirm which applies to your machine.
Key Features
- Genuine OEM Electrical Integrity — sourced directly from Honda, this control box carries the correct 3A rating and circuit configuration for the GX240 and GX270, ensuring the electrical system performs as Honda designed it
- Variant-Specific Fit — the (3A) (Black) designation identifies this as a specific variant; verify your unit's existing control box matches both the amperage rating and color before installation
- Direct Replacement — this assembly installs in place of the original unit on compatible GX240 and GX270 engines with no modifications to the wiring harness or mounting points
- Serial Number Verification Recommended — Honda supersedes control box part numbers at production breaks, so cross-check your engine's serial number against the fitment table to confirm part number 31610-Z5K-821ZA is the correct assembly for your build
The control box on a GX240 or GX270 horizontal shaft engine houses and protects the engine's electrical control components, including the circuitry that manages ignition cutoff and operator safety functions. It serves as the central hub through which electrical signals are routed to keep the engine running under normal conditions and shut it down when required. When the control box fails or becomes damaged — through moisture intrusion, cracked housing, or a faulty internal circuit — the engine may refuse to start, shut down unexpectedly, or lose reliable ignition control, making prompt replacement with a correct OEM assembly essential.
Part Details
| Part Number | 31610-Z5K-821ZA |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Control Box Assembly (3A) (Black) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX240, GX270 | 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.
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