The Honda 99101-ZN1-1080 Main Jet (#108) is a genuine OEM component designed for GXV670 vertical shaft engines. As a direct Honda OEM part, it carries the correct sizing — #108 — to meet the fuel metering specification Honda set for this engine at the factory. This Main Jet (#108) is the right choice for any rebuild, cleaning, or carburetor service on a GXV670, and confirming part number 99101-ZN1-1080 against your engine's serial number before ordering is always recommended, as Honda supersedes jet specifications at production breaks.
Key Features
- Correct Jet Size for Precise Fuel Metering — the #108 designation is not interchangeable; this orifice size governs the air-fuel ratio under load, and an incorrect jet produces rich or lean running conditions that rob power and increase fuel consumption
- Genuine Honda OEM Part — sourced directly from Honda's parts catalog, ensuring the orifice diameter and material meet the specification Honda engineered for the GXV670 carburetor
- GXV670 Vertical Shaft Engine Fitment — listed for GXV670 engines; confirm your engine serial number against the fitment table to ensure this is the correct jet for your production range
- Restores Clean Carburetor Operation — a clogged, damaged, or incorrectly sized main jet causes hard starting, flat spots under throttle, and rough running; replacing it with the correct OEM unit brings fuel delivery back to specification
The main jet is a precision-calibrated orifice inside the carburetor's main circuit. It meters the volume of fuel drawn into the venturi under mid-to-full throttle conditions, directly controlling the engine's air-fuel mixture at higher loads. When the jet becomes clogged with varnish deposits or is worn to an incorrect size, the engine will run lean — losing power and potentially overheating — or rich, causing fouled plugs and excessive fuel use. Replacing it with the correct Honda OEM Main Jet (#108) restores the fuel delivery balance the GXV670 was designed to operate on.
Part Details
| Part Number | 99101-ZN1-1080 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#108) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV670 | 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.
