The Honda 16166-ZH7-V20 Main Nozzle is a genuine OEM replacement designed for the GX120 horizontal shaft engine. Sourced directly from Honda, this component matches the exact specifications of the original part to ensure the carburetor meters fuel correctly. If your GX120 engine is running rich, running lean, or failing to respond cleanly to throttle, a worn or fouled main nozzle is a common cause — and this is the direct OEM replacement to restore proper operation.
Key Features
- Genuine Honda OEM Part — manufactured to Honda's original specification, ensuring the fuel metering orifice is sized exactly as designed for the GX120 carburetor system.
- Restores Correct Fuel Delivery — a degraded or blocked main nozzle disrupts the air-fuel mixture across the throttle range; this replacement brings fuel metering back to spec.
- Direct OEM Replacement — built to drop into the GX120 carburetor without modification, using part number 16166-ZH7-V20 to confirm an exact application match.
- Verify Your Serial Number — Honda supersedes carburetor components at production breaks, so confirm your GX120 serial number against the fitment table before ordering.
The main nozzle is a precision metering component inside the carburetor. It controls the flow of fuel from the float bowl into the main bore of the carburetor, where it mixes with incoming air before entering the engine. The orifice in the nozzle is calibrated to deliver the correct air-fuel ratio under load, so even minor wear, corrosion, or partial blockage will cause the engine to run poorly — typically showing up as hesitation, surging, or a loss of power under load. Replacing a worn or damaged main nozzle is one of the most direct ways to return a carburetor to its original performance.
Part Details
| Part Number | 16166-ZH7-V20 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | 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.
