The Honda 16166-ZF6-005 Main Nozzle is a genuine OEM replacement designed for a wide range of Honda engines and equipment, including GX390 horizontal shaft engines, GXV390 vertical shaft engines, EB3800, EB5000, EB6500, EM3800, EM5000, and EM6500 generators, H3011, H3013, H4013, H5013, and RT5000 tractors, and the HRC7013 commercial mower. Sourced directly from Honda, this part meets the exact specifications of the original component it replaces. Because Honda supersedes parts at serial breaks, confirm your unit's serial number against the fitment table before ordering. This Main Nozzle is a direct OEM replacement that restores correct fuel delivery to the carburetor without requiring modifications.
Key Features
- Correct Fuel Metering — as a genuine Honda OEM part, this nozzle is sized and calibrated to Honda's exact specifications, ensuring the carburetor delivers the precise fuel-to-air ratio the engine or equipment demands at full throttle.
- Broad OEM Fitment — covers GX390 and GXV390 engines, EB and EM series generators, H-series riding mowers and tractors including the H3011, H3013, H4013, H5013, and RT5000, and the HRC7013 commercial mower.
- Serial Number Verification Recommended — Honda updates parts at production serial breaks; check your machine's serial number against the compatibility table to confirm this is the correct nozzle for your unit.
- Restored Engine Performance — a worn or obstructed main nozzle causes rich or lean running, rough operation under load, and excessive fuel consumption; replacing it with this OEM nozzle brings fuel delivery back to specification.
The main nozzle is a precision metering component inside the carburetor's main circuit. At mid to full throttle, fuel is drawn through this nozzle and atomized into the incoming air stream — the nozzle's bore diameter is what governs how much fuel enters the engine at those load points. When the nozzle becomes worn, corroded, or partially blocked by fuel varnish, the engine runs unevenly under load, struggles to reach full power, or consumes fuel inefficiently. Replacing it with an OEM-spec nozzle such as part number 16166-ZF6-005 restores the carburetor's ability to meter fuel accurately and brings the engine back to smooth, responsive operation.
Part Details
| Part Number | 16166-ZF6-005 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7013 | All |
| Generator | EB3800, EB5000, EB6500, EM3800, EM5000, EM6500 | All |
| Horizontal Shaft Engine | GX390 | All |
| Lawn Tractor | H4013 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| Riding Mower | H3011, H3013 | All |
| Vertical Shaft Engine | GXV390 | 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.
