The Honda 16500-Z5T-880 Control Assembly is a genuine OEM component designed for GX340 and GX390 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a correct fit without modification. This assembly covers both the GX340 and GX390 — confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and multiple serial ranges share these models.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this assembly carries the exact throttle and governor control calibration required for correct engine speed response on GX340 and GX390 engines
- Direct-Fit Replacement — engineered to the original Honda design, this part replaces a worn or damaged assembly without rework or adaptation
- GX340 and GX390 Fitment — confirmed for GX340 and GX390 horizontal shaft engines; verify part number 16500-Z5T-880 against your serial number in the fitment table before purchasing
- Restores Speed Control — a worn or binding control assembly causes erratic governed speed, poor load response, and potential overspeed; replacing it brings engine speed management back within spec
The Control Assembly governs the relationship between the throttle input and the governor mechanism on the engine. It links operator throttle demand to the governor linkage, allowing the engine to maintain a consistent speed under varying load conditions. When this assembly wears, binds, or breaks, the engine may hunt, surge, or fail to hold steady speed — symptoms that place stress on both the engine and the equipment it powers.
Part Details
| Part Number | 16500-Z5T-880 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Control Assembly |
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.
