The Honda 99101-124-0800 Main Jet (#80) is a genuine OEM carburetor component designed for a wide range of Honda engines, generators, snow blowers, water pumps, outboard motors, and welder generators, including BF75, BF100, G300, GXV270, HS520, HS720, WT20, WT30, E2500, EB3500, EM3500, EW140, EX3300, BF8, and more. As a genuine Honda part, this Main Jet (#80) is produced to Honda's exact specifications, ensuring correct fuel metering for the carburetors it serves. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes jet sizes at specific production breaks and multiple variants may be listed for a given model.
Key Features
- Correct Fuel Metering — the #80 jet size is a precise calibration; a genuine OEM main jet maintains the correct air-fuel ratio that Honda's carburetor was designed to deliver, preventing rich or lean running conditions
- Genuine Honda OEM Part — sourced directly from Honda, part number 99101-124-0800 matches the original jet for the models listed, with no recalibration or adaptation needed
- Broad Cross-Model Fitment — this Main Jet (#80) is listed for Honda horizontal shaft engines, vertical shaft engines, single-stage snow blowers, water pumps, generators, a welder generator, and portable outboard motors, including G300, GXV270, HS520, HS720, WT20, WT30, E2500, EB3500, EM3500, EW140, EX3300, BF75, BF100, and BF8
- Serial Number Verification Recommended — Honda issues jet supersessions at production breaks; always check your machine's serial number against the fitment table to confirm this is the correct size for your unit
The main jet is a small metered orifice inside the carburetor that controls the volume of fuel delivered to the engine under load. Its calibrated size — in this case #80 — determines how much fuel mixes with incoming air, directly governing power output, throttle response, and fuel efficiency. A blocked, worn, or incorrectly sized main jet causes the engine to run lean (starving for fuel, risking overheating) or rich (wasting fuel, producing black smoke and fouled spark plugs), so replacing a damaged jet with the correct OEM-specification part is essential to restoring proper carburetor function.
Part Details
| Part Number | 99101-124-0800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#80) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | E2500, EB3500, EM3500, EX3300 | All |
| Horizontal Shaft Engine | G300 | All |
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | BF8, BF100 | All |
| Single-Stage Snow Blower | HS520, HS720 | All |
| Vertical Shaft Engine | GXV270 | All |
| Water Pump | WT20, WT30 | All |
| Welder Generator | EW140 | 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.
