The Honda 99201-ZG8-1000 Main Jet Set (#100) is a genuine OEM component designed for EB11000 generators and GX610 and GX620 horizontal shaft engines. As a direct Honda OEM part, it carries the correct #100 jet sizing to match the fuel metering requirements Honda specifies for these applications. Confirm your engine or generator serial number against the fitment table before ordering, as Honda supersedes jet specifications at serial breaks. This set ships as a matched assembly, so you get everything needed to restore the carburetor's fuel circuit in a single service.
Key Features
- Correct Jet Sizing — the #100 designation is a precise metering specification; this OEM set delivers the exact orifice size Honda calibrated for the fuel-air ratio on GX610, GX620, and EB11000 applications
- Genuine Honda OEM — sourced directly from Honda, this part matches the carburetor's original jet geometry, ensuring accurate fuel delivery without adaptation
- Matched Set — supplied as a complete jet set rather than a single jet, covering the full service requirement in one part number (99201-ZG8-1000)
- Serial Number Verification Recommended — Honda updates jet specifications at production serial breaks; check your machine's serial number against the compatibility table to confirm this is the correct set for your unit
- Restored Fuel Metering — a worn, blocked, or incorrectly sized main jet causes rough running, rich or lean conditions, poor throttle response, and hard starting; replacing with the correct OEM jet restores clean combustion across the RPM range
The main jet is the primary metering component inside the carburetor's fuel circuit. It is a precisely drilled orifice through which fuel is drawn into the airstream; the hole diameter — in this case #100 — determines how much fuel enters the engine at wide-open throttle. When a main jet becomes clogged with varnish or debris, or is replaced with an incorrectly sized unit, the engine runs lean or rich, resulting in power loss, overheating, excessive fuel consumption, or an inability to reach full speed. Installing the correctly sized OEM jet restores the fuel-air mixture Honda engineered for the GX610, GX620, and EB11000, bringing combustion efficiency and power output back to specification.
Part Details
| Part Number | 99201-ZG8-1000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet Set (#100) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB11000 | All |
| Horizontal Shaft Engine | GX610, GX620 | 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.
