The Honda 16166-ZE3-F30 Main Nozzle is a genuine OEM replacement designed for EG5000, EN3500, EN5000, EX4500, EZ3500, and EZ5000 generators as well as GX340 horizontal shaft engines. As a factory-original component, this nozzle is manufactured to Honda's exact fuel metering specifications, ensuring the carburetor delivers the correct air-fuel mixture under load. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes nozzle specifications at production breaks. This part is a direct OEM replacement that installs without modification in the original carburetor bore.
Key Features
- Exact Fuel Metering — manufactured to Honda's OEM orifice specification, this nozzle meters fuel at the precise flow rate the carburetor was engineered for, preventing rich or lean running conditions
- Genuine Honda OEM Part — sourced directly from Honda, part number 16166-ZE3-F30 carries no substitutions in material or geometry, ensuring it seats correctly in the main jet passage
- Broad Fitment — covers EG5000, EN3500, EN5000, EX4500, EZ3500, and EZ5000 generators and GX340 horizontal shaft engines; verify your serial number against the fitment table to confirm the correct supersession
- Restores Full Power Output — a worn or clogged main nozzle starves the engine of fuel at mid-to-high throttle, causing surging, power loss, and hard starting; replacing it returns the fuel circuit to proper operation
The main nozzle is the precision metering component inside the carburetor responsible for delivering the correct volume of fuel into the main bore under normal running and load conditions. Sized to an exact orifice diameter, it works with the main jet to calibrate the air-fuel mixture across the operating rpm range. When the nozzle becomes worn, corroded, or blocked by varnish deposits from stale fuel, the engine loses its ability to maintain a consistent mixture, resulting in stumbling under load, surging at steady throttle, or an outright inability to reach full power — symptoms that are often misdiagnosed until the nozzle itself is inspected and replaced.
Part Details
| Part Number | 16166-ZE3-F30 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EG5000, EN3500, EN5000, EX4500, EZ3500, EZ5000 | All |
| Horizontal Shaft Engine | GX340 | 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.
