The Honda 16166-ZG0-U00 Main Nozzle is a genuine OEM replacement designed for the G100 horizontal shaft engine. Sourced directly from Honda, this part meets the exact specifications of the original component it replaces. If your G100 engine is running rich, running lean, or suffering from poor throttle response, a worn or clogged main nozzle is a common cause — and this direct replacement restores accurate fuel metering to get the engine running cleanly again.
Key Features
- Genuine OEM Fuel Metering Accuracy — manufactured to Honda's original calibration, this nozzle delivers the correct fuel-to-air ratio at mid and wide-open throttle, restoring the engine's designed fuel curve without improvisation.
- Direct OEM Replacement — this part carries part number 16166-ZG0-U00 and drops into the carburetor exactly as the original, with no modification to the carburetor body or fuel circuit.
- Built for the G100 Engine — confirmed fitment for the Honda G100 horizontal shaft engine; always verify your engine's serial number against the fitment table before ordering to ensure you have the correct supersession.
- Restores Clean Throttle Response — a degraded or blocked main nozzle causes hesitation, black smoke, or a lean stumble under load; replacing it brings fuel delivery back to specification and restores smooth, consistent power.
The main nozzle is a small but critical calibrated passage inside the carburetor. It meters the quantity of fuel drawn into the airstream at mid-range and full-throttle operation, controlling the engine's air-fuel mixture under load. When the nozzle becomes worn, corroded, or blocked by varnish deposits from stale fuel, the engine loses the ability to maintain a consistent mixture — resulting in rough running, power loss, or excessive fuel consumption. Replacing this component with a genuine Honda part restores the precise flow characteristics the carburetor was designed around.
Part Details
| Part Number | 16166-ZG0-U00 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | G100 | 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.
