The Honda 99101-124-0820 Main Jet (#82) is a genuine OEM carburetor component designed for a wide range of Honda engines and equipment, including GX240 horizontal shaft engines, GXV270 and GXV340 vertical shaft engines, WT20 and WT30 water pumps, HS70 two-stage snow blowers, the H1011 riding mower, BF75 and BF100 portable outboard motors, and generators including the E2500, EB3500, EG3500, EM3500, EW140, and EX3300. As a genuine Honda OEM part, this main jet carries the exact #82 sizing specified by Honda's engineers, ensuring the carburetor delivers the correct fuel-to-air ratio for the engine's designed operating range. Always verify your serial number against the fitment table before ordering, as Honda supersedes jets at production breaks across this broad application list.
Key Features
- Exact Jetting Size — the #82 designation is a precise fuel metering specification; an incorrect jet size will cause rich or lean running conditions that affect power output and fuel consumption
- Genuine Honda OEM — sourced directly from Honda, this jet matches the original carburetor calibration across every listed application, with no re-jetting or adjustment needed
- Broad Cross-Application Fitment — listed for Honda horizontal and vertical shaft engines, water pumps, snow blowers, a riding mower, outboard motors, and generators including the EW140 welder generator; confirm your model and serial number against the fitment table
- Serial Number Verification Recommended — Honda supersedes carburetor jets at production breaks, so check your machine's serial number carefully before ordering to confirm part number 99101-124-0820 is correct for your unit
- Restore Proper Fuel Delivery — a clogged, worn, or incorrect main jet causes hesitation, stalling, hard starting, or excessive fuel consumption; installing the correct OEM jet restores clean throttle response across the RPM range
The main jet is a small, precisely drilled metering orifice installed inside the carburetor's main fuel circuit. Its hole diameter — expressed as a number such as #82 — controls how much fuel enters the airstream at mid-to-full throttle, directly determining the fuel-to-air mixture the engine burns. When a main jet becomes clogged with varnish or debris, the engine runs lean, loses power, and may overheat or stall under load. A jet that is the wrong size produces similar symptoms, or causes excessive fuel consumption and black exhaust smoke if oversized. Replacing a damaged or incorrect jet with the right Honda OEM part restores the carburetor to its original calibration and brings the engine back to its designed performance.
Part Details
| Part Number | 99101-124-0820 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#82) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | E2500, EB3500, EG3500, EM3500, EX3300 | All |
| Horizontal Shaft Engine | G300, GX240 | All |
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | BF8, BF100 | All |
| Riding Mower | H1011 | All |
| Two-Stage Snow Blower | HS70 | All |
| Vertical Shaft Engine | GXV270, GXV340 | 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.
