Honda 99101-ZH8-0920 Main Jet (#92)

The Honda 99101-ZH8-0920 Main Jet (#92) is a genuine OEM carburetor component designed for a wide range of Honda horizontal shaft engines, vertical shaft engines, generators, tillers, riding mowers, lawn tractors, commercial mowers, two-stage snow blowers, and water pumps — including GX240, GX270, GX340, GX390, GX630, GX660, GX670, GX690, GXV340, GXV390, GXV630, GXV660, GXV670, GXV690, EB5000, EB7000, EG5000, EM5000, EM7000, ES6500, EU6500, EX4500, EX5500, EZ3500, EZ5000, FRC800, H1011, H2013, H2113, H3011, H3013, H4514, HRC7113, HS828, HS928, and WT40 units. As a direct Honda OEM part, the Main Jet (#92) carries the correct #92 sizing to maintain the fuel-to-air ratio Honda specifies for each application in this fitment list. Honda supersedes carburetor jets at serial-number breaks, so confirm your unit's serial number against the fitment table before ordering to ensure this is the right jet for your carburetor.

Key Features

• Correct Fuel Metering — the #92 orifice size is calibrated to Honda's specification, delivering the precise fuel flow the carburetor requires for clean combustion and stable power output.
• Genuine Honda OEM — sourced directly from Honda, this jet matches the original part in both orifice diameter and thread form, dropping into the carburetor without modification.
• Broad Fitment Across Honda Equipment — listed for GX-series and GXV-series engines, Honda generators including EB5000, EM5000, and EU6500, WT40 water pumps, HS828 and HS928 two-stage snow blowers, FRC800 tillers, and Honda riding mowers and lawn tractors, among others.
• Serial Number Verification Recommended — Honda updates carburetor jets at production serial breaks; check your machine's serial number against the compatibility table to confirm part number 99101-ZH8-0920 is the correct jet for your carburetor.
• Restore Proper Fuel Delivery — a worn, clogged, or incorrectly sized main jet causes rich or lean running, hard starting, and power loss; replacing it with the correct OEM jet restores the fuel curve Honda engineered for these applications.

The main jet is a precisely sized orifice fitted inside the carburetor's main circuit. It meters the volume of fuel drawn into the airstream at mid to full throttle, and the calibrated hole diameter — in this case, #92 — is what sets the engine's fuel-to-air mixture across that operating range. Because the orifice is fixed rather than adjustable, the correct jet number is critical: a jet that is too small starves the engine of fuel under load, causing overheating and power loss, while a jet that is too large floods the mixture, producing black smoke, fouled spark plugs, and excessive fuel consumption. Replacing a damaged or partially blocked main jet with a genuine Honda unit restores the carburetor's designed fuel curve and brings the engine back to the performance level Honda intended.

Part Details

Compatibility & Fitment

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.