The Honda 99101-124-0950 Main Jet (#95) is a genuine OEM replacement built for a wide range of Honda generators, horizontal and vertical shaft engines, welder generators, RV generators, and tractors — including the GX240, GX340, G400, GV400, EB5000, EM5000, EW170, EW171, EXW171, EV4010, EV6010, EVD4010, E3500, EB4000, EG5000, EM4000, EMS4000, EMS4500, ES3500, EX4500, EX5500, H5013, HT3810, and RT5000. As a direct Honda OEM part, it carries the exact size designation — #95 — ensuring the fuel metering calibration your engine or generator requires. Verify your unit's serial number against the fitment table before ordering, as Honda supersedes carburetor jets at production breaks, and multiple jet sizes may be listed for the same model family.
Key Features
- Exact Fuel Metering — the #95 size designation is factory-calibrated to deliver the correct fuel-to-air ratio; an incorrect jet size causes rich or lean running, poor throttle response, and hard starting
- Genuine Honda OEM — sourced directly from Honda, this jet matches the original specification for carburetor fuel flow and idle-to-wide-open-throttle transition on every listed application
- Broad OEM Coverage — fits an extensive range of Honda equipment including GX240 and GX340 horizontal shaft engines, GV400 vertical shaft engines, G400 engines, EB5000 and EM5000 generators, EW170 and EW171 welder generators, EV-series RV generators, and H5013, HT3810, and RT5000 tractors
- Serial Number Verification Recommended — carburetor jet supersessions are common across Honda's production runs; always confirm your machine's serial number against the compatibility table to ensure part number 99101-124-0950 is correct for your specific unit
The main jet is the precisely sized orifice inside the carburetor that meters fuel flow into the engine's air stream under mid-range and wide-open-throttle conditions. Its bore diameter — designated here as #95 — is what determines how much fuel reaches the combustion chamber at a given engine speed; too small a jet starves the engine and causes lean running and overheating, while too large a jet floods the mixture and produces black smoke, fouled spark plugs, and lost power. When a main jet becomes clogged with varnish or debris from stale fuel, the engine loses power progressively or refuses to run above idle until the jet is cleaned or replaced with a fresh OEM unit.
Part Details
| Part Number | 99101-124-0950 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#95) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB4000, EM4000, EMS4000, EMS4500 | 1027243-9999999 |
| Generator | E3500, EB5000, EG5000, EM5000, ES3500, EX4500, EX5500 | All |
| Horizontal Shaft Engine | G400, GX240, GX340 | All |
| Lawn Tractor | HT3810 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| RV Generator | EV4010, EV6010, EVD4010 | All |
| Vertical Shaft Engine | GV400 | All |
| Welder Generator | EW170, EW171, EXW171 | 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.
