The Honda 99201-ZG8-0920 Main Jet Set (#92) is a genuine OEM component designed for GX610, GX620, and GX640 horizontal shaft engines, GXV610 and GXV620 vertical shaft engines, and a range of Honda machines including the EB11000 generator, H4518, H5518, HA4118, and HA4120 lawn and multi-purpose tractors, and HRC7018 and HRC7020 commercial mowers. Sourced directly from Honda, this jet set carries the correct #92 size designation, which is the specification your carburetor requires to meter fuel accurately at the rated displacement of these large-displacement engines. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes jets at serial breaks across these models.
Key Features
- Correct Jetting for Large-Displacement Honda Engines — the #92 size is calibrated specifically for the fuel-metering demands of the GX610, GX620, GX640, GXV610, GXV620, and the machines they power, ensuring the carburetor delivers the right air-fuel ratio under load
- Genuine Honda OEM Part — manufactured to Honda's own specifications, this jet set matches the original in orifice diameter and thread form, dropping in without modification
- Broad Fitment Across Honda's Lineup — listed for horizontal and vertical shaft engines, the EB11000 generator, lawn and multi-purpose tractors, and HRC7018 and HRC7020 commercial mowers; verify your serial number against the fitment table to confirm the correct jet for your unit
- Restores Proper Engine Performance — a worn, corroded, or incorrectly sized main jet causes lean or rich running, hard starting, and power loss; installing the correct #92 jet returns the engine to its intended fuel delivery and throttle response
The main jet is the primary fuel-metering orifice inside the carburetor's main circuit. At mid to full throttle, engine vacuum draws fuel through this jet's precisely sized hole, mixing it with incoming air to form a combustible charge. The diameter of that orifice — expressed here as #92 — determines how much fuel enters the engine under load: too small and the engine runs lean and overheats; too large and it runs rich, fouls plugs, and loses power. Over time, jets can corrode, become partially blocked by fuel deposits, or be damaged during carburetor cleaning, all of which alter the orifice size and upset the fuel mixture. Replacing the main jet with the correct OEM part restores accurate fuel metering and returns the engine to its designed power output and fuel efficiency.
Part Details
| Part Number | 99201-ZG8-0920 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet Set (#92) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7018, HRC7020 | All |
| Generator | EB11000 | All |
| Horizontal Shaft Engine | GX610, GX620, GX640 | All |
| Lawn Tractor | H4518, HA4118, HA4120 | All |
| Multi-Purpose Tractor | H5518 | All |
| Vertical Shaft Engine | GXV610, GXV620 | 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.
