The Honda 99201-ZG8-0950 Main Jet Set (#95) is a genuine OEM component designed for GX610 and GX620 horizontal shaft engines, GXV610 and GXV620 vertical shaft engines, the EB11000 generator, and H4518, H5518, HA4118, and HA4120 lawn and multi-purpose tractors. As a genuine Honda part, it is manufactured to the exact specifications of the original, ensuring correct fuel metering for the carburettor it serves. Confirm your engine or equipment serial number against the fitment table before ordering, as Honda periodically supersedes jet specifications at production breaks.
Key Features
- Correct Fuel Metering — a #95 jet size is a precise specification; this genuine OEM set delivers the exact orifice diameter Honda engineers specified for correct air-fuel ratio and consistent throttle response across the power range.
- Genuine OEM Part — sourced directly from Honda, part number 99201-ZG8-0950 matches the original jet removed from the carburettor, with no sizing or flow-rate guesswork.
- Broad Fitment — listed for GX610, GX620, GXV610, and GXV620 engines, the EB11000 generator, and H4518, H5518, HA4118, and HA4120 tractors, including both horizontal and vertical shaft applications.
- Serial Number Verification Recommended — Honda supersedes carburettor and fuel system components at production breaks; check your machine's serial number against the fitment table to confirm this is the correct jet for your unit.
- Restores Engine Performance — a worn, clogged, or incorrectly sized main jet causes rich or lean running, hard starting, poor peak power, and excessive fuel consumption; replacing it with the correct OEM jet restores clean combustion and full output.
The main jet is a small metered orifice inside the carburettor's main circuit that controls the volume of fuel delivered to the engine under mid-to-full throttle conditions. Its size — in this case #95 — is calibrated to work with a specific carburettor bore, needle position, and engine displacement, so substituting an incorrect jet size directly affects power output, fuel economy, and emissions. Over time, jets can become partially blocked by varnish deposits from stale fuel or physically eroded from abrasive particles in the fuel supply; either condition shifts the air-fuel mixture away from the design target and causes symptoms such as stumbling under load, black smoke, or a lean surge at wide-open throttle.
Part Details
| Part Number | 99201-ZG8-0950 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet Set (#95) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB11000 | All |
| Horizontal Shaft Engine | GX610, GX620 | 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.
