The Honda 16166-ZF6-W10 Main Nozzle is a genuine OEM component designed for GX390 horizontal shaft engines. As a direct OEM replacement, this part is manufactured to Honda's exact specifications, ensuring correct fuel metering performance is restored without guesswork. Honda supersedes carburetor components at serial breaks, so confirm your engine's serial number against the fitment table before ordering to make sure part number 16166-ZF6-W10 is the right match for your unit.
Key Features
- Correct Fuel Metering — as a genuine OEM main nozzle, this part is sized to Honda's exact calibration for the GX390 carburetor, preserving the air-fuel ratio the engine was tuned to deliver
- Direct OEM Replacement — drops into the carburetor body the same way the original did, with no fitting or adjustment needed beyond standard carburetor reassembly
- Fits GX390 Horizontal Shaft Engines — sourced directly from Honda, this nozzle is catalogued specifically for the GX390 engine family
- Serial Number Matters — Honda updates carburetor components across production runs; verify your engine's serial number against the fitment table to confirm this is the correct nozzle for your GX390
The main nozzle is the precision orifice inside the carburetor through which fuel is drawn into the airstream under engine load. Its bore diameter is calibrated to deliver the correct volume of fuel at the right engine speeds, maintaining the air-fuel mixture the engine needs to run cleanly and produce its rated output. When a main nozzle is worn, damaged, or partially blocked, the engine will run lean under load — resulting in power loss, overheating, or erratic throttle response — making it one of the first components to inspect during a carburetor rebuild.
Part Details
| Part Number | 16166-ZF6-W10 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | 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.
