The Honda 16166-Z1T-721 Main Nozzle is a genuine OEM component designed for GX160 horizontal shaft engines. Sourced directly from Honda, this part meets the exact specifications of the original and ensures the carburetor delivers the correct fuel-to-air ratio for consistent engine performance. If your GX160 is running rich, running lean, or surging under load, a worn or damaged main nozzle is a common culprit — and this is the correct Honda replacement to restore it.
Key Features
- Genuine OEM Fuel Metering Accuracy — manufactured to Honda's exact orifice dimensions, ensuring the carburetor delivers the correct fuel charge at every throttle position
- Direct Carburetor Replacement — this part drops into the GX160 carburetor as a factory replacement, with no alterations needed to seat it correctly
- GX160 Fitment — verify your engine's serial number against the fitment table before ordering, as Honda updates components at serial breaks and more than one nozzle variant may be listed for this model
- Restores Clean Running — a clogged or eroded main nozzle causes surging, hard starting, and poor throttle response; replacing it brings fuel delivery back to spec
The main nozzle is a precision-bored jet located inside the carburetor body. It controls how much fuel is drawn into the airstream during mid-range and wide-open throttle operation, making it one of the most critical components for smooth, responsive engine behavior. Over time, the nozzle's orifice can become partially blocked by varnish deposits from stale fuel or physically worn from extended use — either condition disrupts fuel metering and causes the engine to run erratically, lose power, or fail to reach full operating speed. Replacing this component with the correct Honda part restores proper carburetor function and returns the GX160 to its original performance.
Part Details
| Part Number | 16166-Z1T-721 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX160 | 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.
