The Honda 16166-Z1D-D22 Main Nozzle is a genuine OEM component designed for Honda EB4000, EB5000, EB6500, EM4000, EM5000, and EM6500 generators. As a direct-sourced Honda part, this nozzle is manufactured to the same specification as the original, ensuring correct fuel metering inside the carburetor. Honda supersedes parts at serial breaks, so confirm your generator's serial number against the fitment table before ordering to make sure part number 16166-Z1D-D22 is the right match for your unit.
Key Features
- Correct Fuel Metering — as a genuine OEM main nozzle, this component delivers the precise orifice sizing Honda engineered into the carburetor, maintaining the air-fuel ratio the generator depends on for stable output.
- Direct OEM Replacement — sourced directly from Honda, this nozzle drops into the carburetor without modification, restoring the original fuel circuit.
- Broad Generator Fitment — covers six Honda generator models including the EB4000, EB5000, EB6500, EM4000, EM5000, and EM6500; check your serial number against the fitment table to confirm applicability for your specific unit.
- Restore Consistent Power Output — a worn or clogged main nozzle causes lean running, surging, or hard starting; replacing it returns the generator to steady, dependable operation under load.
The main nozzle is a small but critical jet inside the carburetor that meters fuel flow into the main circuit during normal engine operation. It works alongside the needle and needle jet to deliver the correct quantity of fuel into the air stream as the engine responds to load demands — too little fuel and the engine runs lean and surges; too much and it runs rich and loads up. On a generator where consistent voltage output depends on a stable engine speed, a degraded or blocked main nozzle can cause noticeable fluctuations in power delivery. Replacing this nozzle with a genuine Honda part restores the original fuel circuit calibration and brings the generator back to reliable, steady operation.
Part Details
| Part Number | 16166-Z1D-D22 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB4000, EB5000, EB6500, EM4000, EM5000, EM6500 | 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.
