The Multiquip 99101ZH70550 Main Jet (#55) GX120K1 HC- is a genuine OEM carburetor jet designed for GX120K1 engine applications. As a direct OEM replacement, this jet is manufactured to the exact metering specification required by the GX120K1 carburetor, ensuring the correct air-fuel mixture is delivered under load. Multiquip OEM parts are sourced through authorized supply channels, so you can be confident that 99101ZH70550 is the right component for your engine. Confirm your engine model against the GX120K1 designation before ordering to ensure proper fitment.
Key Features
- Calibrated Fuel Metering — Sized to the #55 orifice specification, this jet delivers the correct fuel flow rate for the GX120K1 carburetor's main circuit under working conditions.
- Genuine OEM Component — Sourced directly through Multiquip's authorized parts network, this jet matches the original carburetor hardware for a drop-in installation with no re-jetting or adjustment required.
- GX120K1 Engine Fitment — Engineered specifically for GX120K1 engine applications; always verify your engine model code before ordering.
- Consistent Engine Response — A correctly sized main jet keeps throttle response smooth and prevents the rich or lean running conditions that cause hard starting, surging, or power loss.
- Fuel System Integrity — Using the correct OEM-spec jet in fuel-system components helps maintain safe, stable combustion and prevents the running faults associated with incorrect fuel delivery.
The main jet is a small but critical brass metering component located inside the carburetor's main circuit. Its precisely drilled orifice controls the volume of fuel drawn into the airstream at mid-to-full throttle, directly determining how the engine runs under load. When a main jet becomes clogged, worn, or is replaced with an incorrect size, the engine will typically run lean — causing overheating, surging, and power loss — or run rich, leading to fouled spark plugs and excessive fuel consumption. Replacing a faulty or damaged jet with the correct OEM-specification part restores proper carburetion and engine performance.
Part Details
| Part Number | 99101ZH70550 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Main Jet (#55) GX120K1 HC-4425468 |
Compatibility & Fitment
| Name | Model |
|---|---|
| GX120K1 | GX120K1 |
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.
