The Honda 16166-ZL8-003 Main Carburetor Nozzle is a genuine OEM replacement designed for GC135 and GC160 horizontal shaft engines, EN2000 and EN2500 generators, WN20 and WN30 water pumps, and FG400 and FG500 tillers. As a factory-sourced component, this nozzle is manufactured to the same specification as the original, ensuring correct fuel metering without recalibration or adjustment. Confirm your unit's serial number against the fitment table before ordering, as Honda supersedes nozzle part numbers at production breaks.
Key Features
- Correct Fuel Metering — genuine OEM construction means the nozzle orifice is sized exactly to Honda's specification, delivering the precise fuel flow the carburetor was calibrated for at the factory.
- Direct Carburetor Replacement — this nozzle installs directly into the carburetor body as a drop-in replacement, restoring proper air-fuel mixture without modification.
- Broad Honda Fitment — covers GC135 and GC160 horizontal shaft engines, EN2000 and EN2500 generators, WN20 and WN30 water pumps, and FG400 and FG500 tillers; check your serial number to confirm the correct match for your unit.
- Restored Engine Response — a worn or damaged main nozzle causes rich or lean running, rough idle, poor throttle response, and increased fuel consumption; replacing it returns the engine to smooth, consistent power delivery.
The main carburetor nozzle is the metering component inside the carburetor that controls how much fuel enters the airstream under normal running conditions. Fuel is drawn through the nozzle's calibrated orifice by air velocity in the venturi, mixing with incoming air to form the combustible charge the engine needs. When the nozzle orifice wears, corrodes, or becomes partially blocked, the air-fuel ratio shifts — leading to hard starting, hesitation, rough running, or excessive fuel use — and restoring it to original specification brings the engine back to clean, efficient operation.
Part Details
| Part Number | 16166-ZL8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Carburetor Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EN2000, EN2500 | All |
| Horizontal Shaft Engine | GC135, GC160 | All |
| Tiller | FG400, FG500 | All |
| Water Pump | WN20, WN30 | 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.
