The Honda 99101-ZF5-1020 Main Jet (#102) is a genuine OEM carburetor component designed for EB6500 generators and GX390 horizontal shaft engines. As a size-specific jet, this part is listed for both machine types — verify that #102 is the correct jet size for your unit's carburetor before ordering, as different carburetor configurations may require a different size. Honda sources this jet to the same specification as the original, ensuring the correct orifice diameter for accurate fuel delivery.
Key Features
- Correct Fuel Metering — the #102 orifice diameter is machined to Honda's OEM specification, maintaining the air-fuel ratio your carburetor was calibrated for
- Genuine OEM Part — sourced directly from Honda, this jet carries the same part number 99101-ZF5-1020 as the original, eliminating guesswork on spec matching
- Size-Specific Selection — the (#102) designation identifies the jet size; confirm this matches your carburetor's requirement before installing, especially if your unit has been rejetted or the carburetor has been replaced
- Serial Number Awareness — Honda supersedes carburetor components at serial breaks; check your machine's serial number against the fitment table to confirm this is the current jet for your EB6500 or GX390
The main jet is the precision metering orifice at the heart of the carburetor's fuel circuit. It controls how much fuel enters the venturi under mid-to-high throttle conditions, directly governing the engine's air-fuel mixture at working loads. A jet that is clogged, corroded, or worn to an oversize bore causes the engine to run lean or rich — symptoms include rough running, loss of power, poor fuel economy, and difficulty holding a steady speed under load. Replacing a worn or fouled main jet with a correctly sized OEM unit restores the carburetor to its original fuel delivery calibration.
Part Details
| Part Number | 99101-ZF5-1020 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Main Jet (#102) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB6500 | All |
| Horizontal Shaft Engine | GX390 | 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.
