The Honda 99101-ZG0-0500 Main Jet (#50) is a genuine OEM carburetor component designed for a wide range of Honda engines and power equipment, including G100 horizontal shaft engines, GXH50 horizontal shaft engines, GXV50 and GXV57 vertical shaft engines, EG650 and EX1000 generators, F220 tillers, and WB15 and WX15 water pumps. As a direct Honda OEM part, this Main Jet (#50) is sized and calibrated to Honda's original specification, ensuring the correct fuel metering your carburetor depends on. Always confirm the part number 99101-ZG0-0500 against your machine's serial number and model, as Honda supersedes carburetor jets at production breaks.
Key Features
- Correct Fuel Metering — the #50 orifice size is calibrated to Honda's original specification for this carburetor, delivering the air-fuel ratio the engine was tuned for at the factory
- Genuine OEM Part — sourced directly from Honda, this jet is identical to the component installed at the time of manufacture, with no guesswork on sizing or thread form
- Broad Fitment — listed for G100, GXH50, GXV50, GXV57, EG650, EX1000, F220, WB15, and WX15 units; confirm your model and serial number against the fitment table before ordering
- Serial-Range Awareness — Honda updates carburetor jet specifications at production serial breaks; always cross-reference your machine's serial number to confirm this is the correct jet for your unit
- Restore Clean Running — a worn, clogged, or incorrectly sized main jet causes rich or lean running conditions, rough idle, poor throttle response, and hard starting; replacing it restores crisp, consistent engine output
The main jet is a precisely sized brass metering orifice seated inside the carburetor body. It controls the volume of fuel drawn into the airstream at mid to full throttle, and its orifice diameter is what determines the engine's air-fuel mixture under load. Because the jet's bore is calibrated to within fractions of a millimeter, even a partially blocked or worn jet throws off the mixture — leading to symptoms like black smoke, fuel fouling, loss of power, or an engine that hunts and surges under load. Replacing a damaged or clogged main jet with the correct Honda OEM part restores the carburetor's ability to deliver a clean, consistent fuel charge across the full throttle range.
Part Details
| Part Number | 99101-ZG0-0500 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#50) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EG650 | 3122413-9999999 |
| Generator | EX1000 | All |
| Horizontal Shaft Engine | G100, GXH50 | All |
| Tiller | F220 | All |
| Vertical Shaft Engine | GXV50, GXV57 | All |
| Water Pump | WB15, WX15 | 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.
