Multiquip 99101ZH70920 Main Jet (#92) GX390K1QA2 HC-4221099

The Multiquip 99101ZH70920 Main Jet (#92) GX390K1QA2 HC- is a genuine OEM carburetor jet designed for GX390K1QA2 engine applications. As a direct OEM replacement, part 99101ZH70920 delivers the exact fuel metering specification your engine requires to run cleanly and efficiently. This jet is sourced directly through Multiquip's authorized parts network, ensuring you receive an authentic component matched to your GX390K1QA2-equipped machine.

Key Features

• Exact OEM Fuel Metering: — Sized to the precise #92 jet specification, this genuine OEM part maintains the correct air-fuel ratio for clean combustion in GX390K1QA2 engines.
• Direct Carburetor Fit: — Threads directly into the carburetor bowl as a drop-in replacement for the original jet, with no drilling or re-jetting required.
• GX390K1QA2 Engine Compatibility: — Confirmed fitment for GX390K1QA2 engine configurations; always cross-reference your engine model and HC reference code before ordering.
• Prevents Rich or Lean Run Conditions: — A worn or clogged main jet causes hard starting, rough idle, or power loss; replacing it with a correctly sized OEM jet restores proper throttle response and engine output.
• Genuine Multiquip OEM Part: — Supplied through Multiquip's authorized distribution channel, this component meets the original design intent for long-term carburetor performance.

The main jet is a small but critical component inside the carburetor that meters the volume of fuel delivered to the engine under load. It works by allowing a precisely calibrated amount of fuel to pass through a fixed orifice, which mixes with incoming air to form the combustible charge the engine needs. When a main jet becomes clogged with varnish or debris, or wears beyond its original orifice size, the engine will run lean or rich — leading to overheating, power loss, or difficulty sustaining RPM under load. Replacing a faulty main jet with the correct OEM-spec part is one of the most effective ways to restore consistent engine performance.

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.