The Honda 16166-Z9E-801 Main Nozzle is a genuine OEM component designed for GX630, GX660, and GX690 horizontal shaft engines. As a direct OEM replacement, this nozzle is manufactured to Honda's exact specifications, ensuring the carburetor delivers the correct fuel metering your engine depends on. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes carburetor components at serial breaks across the GX630, GX660, and GX690 lineup.
Key Features
- Correct Fuel Metering — genuine OEM construction means the orifice diameter and flow characteristics match Honda's original specification, so the carburetor delivers the right air-fuel ratio across the RPM range
- Direct Carburetor Replacement — this nozzle installs into the carburetor body as a drop-in replacement with no modifications, restoring fuel delivery to as-built condition
- Fits GX630, GX660, and GX690 Engines — purpose-built for Honda's large-displacement horizontal shaft engine series; check your serial number against the fitment table to confirm the correct application
- Prevents Rich or Lean Running — a worn or damaged main nozzle causes erratic fueling, rough running under load, and poor throttle response; replacing it restores crisp, consistent power delivery
The main nozzle is a precision-calibrated fuel metering component located inside the carburetor. It controls the volume of fuel drawn into the airstream during mid-range and wide-open-throttle operation, and its orifice size is matched specifically to the engine's displacement and tuning. When the main nozzle wears, becomes clogged, or is damaged, the engine will run lean under load, surge, lose power, or run excessively rich — symptoms that are often mistaken for broader carburetor failure. Replacing this part with a genuine Honda nozzle restores accurate fuel delivery and ensures the engine performs as intended.
Part Details
| Part Number | 16166-Z9E-801 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX630, GX660, GX690 | 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.
