The Honda 16166-Z1A-H01 Main Nozzle is a genuine OEM replacement designed for HS520 and HS720 single-stage snow blowers. As an authentic Honda part, it is manufactured to the same specifications as the original, ensuring correct fuel metering and a direct, trouble-free installation. This main nozzle fits both the HS520 and HS720 — verify your unit's serial number against the fitment table before ordering, as Honda supersedes parts at specific serial breaks. Keeping fuel delivery precise is critical to cold-weather starting and consistent snow-clearing performance.
Key Features
- Genuine OEM Fuel Metering — manufactured by Honda to the exact orifice size the carburetor requires, ensuring the correct air-fuel ratio under all operating conditions
- Direct OEM Replacement — installs in place of the original main nozzle with no modification, restoring the carburetor to proper working order
- Fits HS520 and HS720 Single-Stage Snow Blowers — confirm your serial number against the compatibility table, as Honda updates part numbers at defined production breaks
- Restored Cold-Weather Starting — a worn or clogged main nozzle starves the engine of fuel, leading to hard starts and rough running; this replacement brings fueling back to specification
The main nozzle is a precision-metered jet inside the carburetor that controls the volume of fuel delivered to the engine under normal running load. Its calibrated orifice sets the fuel flow rate in proportion to incoming air, which the carburetor requires to maintain a stable combustion mixture across varying throttle positions. When the nozzle becomes clogged with varnish deposits or wears beyond tolerance, the engine runs lean — causing hesitation, loss of power, and difficult starting in the cold temperatures where a snow blower is called upon most.
Part Details
| Part Number | 16166-Z1A-H01 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Nozzle |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Single-Stage Snow Blower | HS520, HS720 | 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.
