The Honda 16166-ZH7-820 Main Nozzle is a genuine OEM replacement designed for GX120 horizontal shaft engines, EG1400, EG2200, and EG2500 generators, EZ1400 and EZ2500 generators, F401 and F501 tillers, WB20, WB30, WD20, and WD30 water pumps. As an authentic Honda part, this nozzle is manufactured to the same specification as the original, ensuring the carburetor meters fuel at the correct rate for the equipment it serves. Confirm part number 16166-ZH7-820 against your machine's serial number and model tag before ordering, as Honda supersedes carburetor components at production breaks across a wide range of equipment.
Key Features
- Correct Fuel Metering — as a genuine OEM component, this Main Nozzle delivers the precise orifice diameter Honda specifies for accurate fuel delivery and proper air-fuel ratio across throttle positions
- Direct Carburetor Replacement — engineered to drop into the original carburetor bore without modification, restoring the fuel circuit to its original operating condition
- Broad Honda Fitment — covers GX120 horizontal shaft engines, EG and EZ generators, F401 and F501 tillers, and WB and WD water pumps, including the WB20, WB30, WD20, and WD30
- Serial Number Verification Recommended — Honda updates carburetor sub-components at production breaks, so always cross-check your machine's serial number against the fitment table to confirm this is the correct nozzle for your unit
The main nozzle is a precision-calibrated jet inside the carburetor that meters the fuel drawn into the airstream during normal running operation. Its orifice size is tuned to deliver the correct fuel quantity at cruising and load throttle positions, and even minor erosion or clogging of this passage will cause the engine to run lean, lose power, surge, or stall under load. Replacing a worn or fouled nozzle with a correctly sized OEM part restores clean fuel delivery and stable combustion across the full operating range of the carburetor.
Part Details
| Part Number | 16166-ZH7-820 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EG1400, EG2200, EG2500, EZ1400, EZ2500 | All |
| Horizontal Shaft Engine | GX120 | All |
| Tiller | F401, F501 | All |
| Water Pump | WB20, WB30, WD20, WD30 | 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.
