The Honda 16166-Z8T-911 Main Nozzle is a genuine OEM replacement designed for GX340 horizontal shaft engines. As a direct Honda OEM component, this Main Nozzle is manufactured to the exact tolerances required for correct fuel metering through the carburetor. If your GX340 is running rich, running lean, stumbling under load, or refusing to throttle cleanly, a worn or fouled main nozzle is a common culprit — and replacing it with part number 16166-Z8T-911 restores the factory fuel circuit. Confirm your engine's serial number against the fitment table before ordering to ensure this nozzle matches your specific GX340 build.
Key Features
- Exact Fuel Metering — as a genuine Honda OEM part, this Main Nozzle is dimensioned to deliver the precise fuel flow the GX340 carburetor requires, maintaining the correct air-fuel ratio across the throttle range.
- Direct Carburetor Fit — engineered as a drop-in replacement for the GX340 carburetor, with no modification needed to the fuel circuit or carburetor body.
- GX340 Fitment — built specifically for GX340 horizontal shaft engines; verify your serial number against the fitment table to confirm compatibility with your production build.
- Restores Clean Throttle Response — a degraded or clogged main nozzle causes hesitation, rich or lean running, and poor power delivery; this OEM nozzle brings the fuel system back to correct operation.
The main nozzle is the calibrated metering jet at the heart of the carburetor's main fuel circuit. It controls how much fuel is drawn into the airstream when the engine is running at mid to full throttle, and its bore diameter is precision-sized to balance the air-fuel mixture the engine needs to run efficiently under load. When the nozzle becomes worn, corroded, or blocked by fuel varnish deposits, the engine loses the ability to meter fuel accurately — resulting in rough running, black smoke, fuel starvation, or a noticeable drop in power. Replacing it with the correct OEM part restores the integrity of the fuel circuit and returns the GX340 to its proper operating condition.
Part Details
| Part Number | 16166-Z8T-911 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX340 | 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.
