The Honda 16100-ZH7-812 is a genuine OEM Carburetor Assembly (BE12B C) designed for GX120 horizontal shaft engines and the WB20, WB30, WD20, and WD30 water pumps. As a direct Honda OEM component, this carburetor is manufactured to the same specification as the original unit it replaces, ensuring the fuel-air calibration your engine depends on is maintained from the first start. Confirm the BE12B C variant against your existing carburetor before ordering, and verify your machine's serial number against the fitment table to ensure this assembly is correct for your specific unit.
Key Features
- Correct Fuel-Air Calibration — as a genuine Honda OEM assembly, this carburetor carries the exact jetting, needle, and emulsion tube configuration specified for the BE12B C application, delivering the metering your engine requires across its operating range.
- Direct OEM Replacement — this assembly installs in place of the original without modification, restoring the carburetor to the same fit and function Honda engineered into the GX120 engine platform.
- Broad Fitment Across Honda Equipment — covers GX120 horizontal shaft engines as well as WB20, WB30, WD20, and WD30 water pumps; confirm your model and serial number against the fitment table, as Honda supersedes parts at serial breaks.
- Variant Identification Matters — the BE12B C designation identifies this as a specific carburetor variant; if your machine uses a different carburetor code, match that code to the correct listing before purchasing.
- Restored Engine Response — a worn or gummed carburetor causes hard starting, rough idle, and fuel starvation under load; replacing it with this assembly brings throttle response and fuel efficiency back to spec.
The carburetor is responsible for mixing fuel and air in the precise ratio the engine needs to start, idle, and run under load. On GX120 engines and the water pumps they power, a correctly functioning carburetor controls engine speed from low idle through full throttle, responding to demand changes as the pump moves water. When a carburetor degrades — through varnish buildup from stale fuel, worn needle seats, or cracked passages — the engine suffers hard starts, erratic idle, or loss of power under load. Replacing the assembly with a genuine Honda unit restores the original calibration and brings the engine back to consistent, dependable operation.
Part Details
| Part Number | 16100-ZH7-812 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BE12B C) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | All |
| Water Pump | WB20, WB30, WD20, WD30 | 1000001-2724424 |
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.
