The Honda 16166-Z1D-D51 Main Nozzle is a genuine OEM carburetor component designed for GX270 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring correct fuel metering and a proper fit without modification. If your GX270 engine is running rough, running rich, or struggling to maintain consistent power, a worn or clogged main nozzle is a likely cause — and this part is the correct replacement. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks within the GX270 production run.
Key Features
- Correct Fuel Metering — manufactured to Honda OEM specification, this nozzle delivers the precise fuel flow the GX270 carburetor requires for consistent air-fuel ratio across the engine's operating range.
- Direct OEM Replacement — sourced directly from Honda, part number 16166-Z1D-D51 matches the original nozzle geometry exactly, dropping into the carburetor without alteration.
- GX270 Specific Fitment — designed specifically for GX270 horizontal shaft engines; always verify your serial number against the compatibility table to confirm this is the correct nozzle for your unit.
- Restores Engine Performance — a worn, clogged, or damaged main nozzle disrupts the fuel circuit, causing hard starting, rough running, and power loss; replacing it with this OEM part brings the fuel system back to proper operation.
The main nozzle is a precision metering component inside the carburetor's fuel circuit. It controls the volume of fuel drawn from the float bowl into the airstream during mid- to full-throttle operation, working alongside the main jet to establish the correct air-fuel mixture the engine needs to run efficiently. When the main nozzle becomes clogged with varnish deposits or worn beyond its original dimensions, the engine receives an incorrect mixture — resulting in lean stumbles, rich running, excessive fuel consumption, or a complete loss of power under load.
Part Details
| Part Number | 16166-Z1D-D51 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX270 | 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.
