The Honda 31610-Z5T-811ZA Control Box Assembly (External) is a genuine OEM replacement designed for GX340 and GX390 horizontal shaft engines. Sourced directly from Honda, this assembly matches the original unit exactly, ensuring the electrical controls housed within operate as intended from the moment installation is complete. If your existing control box is cracked, damaged, or no longer functioning correctly, this part restores proper control system operation without cutting corners on fit or quality.
Key Features
- Genuine Honda OEM Quality — manufactured to Honda's original design specifications, so the electrical interfaces, mounting geometry, and housing dimensions match what came off the production line
- Direct-Fit Replacement — built specifically for GX340 and GX390 horizontal shaft engines, this assembly drops into place without alteration
- Serial Number Verification Recommended — Honda updates components at specific serial breaks, so confirm your engine's serial number against the fitment table before ordering to ensure part number 31610-Z5T-811ZA is correct for your unit
- Restored Control System Function — a damaged or failed external control box can interrupt engine control signals and prevent normal operation; this replacement brings the control system back to its original working condition
The external control box assembly houses and protects the electrical control components mounted on the outside of the engine. It provides the enclosure through which operator inputs — such as throttle and stop signals — are routed to manage engine behavior. When the housing is compromised or internal components fail, the engine may become unresponsive to controls or behave erratically; replacing the assembly with a genuine Honda unit restores the integrity of that control circuit.
Part Details
| Part Number | 31610-Z5T-811ZA |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Control Box Assembly (External) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX340, GX390 | 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.
