The Honda 99101-ZE8-0850 Main Jet (#85) is a genuine OEM component designed for GXV270 and GXV340 vertical shaft engines. As a direct Honda OEM part, it is manufactured to the exact sizing and tolerances specified for these engines, ensuring the carburetor meters fuel at the correct rate. Confirm your engine serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and the correct jet number for your unit must match.
Key Features
- Exact Orifice Sizing — the #85 designation is a precise calibration; this OEM jet delivers the specific fuel flow rate the GXV270 and GXV340 carburetors require for correct air-fuel mixture under load
- Genuine Honda OEM — sourced directly from Honda, this part meets the original design specification for part number 99101-ZE8-0850, with no deviation in orifice diameter or thread form
- Fits GXV270 and GXV340 Vertical Shaft Engines — designed for these two Honda vertical shaft engine families; verify your serial number against the fitment table to confirm this is the correct jet for your serial range
- Restored Fuel Delivery — a worn, clogged, or incorrect main jet causes rich or lean running, poor throttle response, and hard starting; replacing it with the correct OEM jet restores clean, consistent engine performance
The main jet is a small, precisely drilled metering component seated inside the carburetor's float bowl. It controls the volume of fuel drawn into the engine's air stream at mid to full throttle, and its orifice size — indicated here by the #85 designation — is calibrated specifically to the engine's displacement and air flow. A blocked or damaged main jet starves the engine of fuel under load, causing surging, loss of power, or stalling, while an incorrect size throws off the air-fuel ratio and leads to rough running or excessive fuel consumption.
Part Details
| Part Number | 99101-ZE8-0850 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#85) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV270, GXV340 | 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.
