The Honda 16100-Z6C-V21 Carburetor Assembly (BG21S A) is a genuine OEM carburetor assembly designed for GX610 and GX620 horizontal shaft engines. As a factory-sourced component, this carburetor assembly is built to Honda's exact specifications, ensuring correct fuel metering, air-to-fuel ratios, and throttle response right out of the box. The BG21S A designation identifies this as a specific carburetor variant — confirm that variant code matches your original unit before ordering. Sourcing an exact OEM replacement eliminates the guesswork that comes with off-spec alternatives and gets your engine back to running as intended.
Key Features
- Correct Jetting and Fuel Metering — as a genuine Honda OEM carburetor assembly, this part delivers the precise air-to-fuel calibration the GX610 and GX620 engines are engineered around, supporting clean combustion and responsive throttle behavior
- Variant-Specific Fitment — the BG21S A variant code is a critical match point; Honda produced multiple carburetor configurations for these engines, so confirm your original part number 16100-Z6C-V21 and variant before installing
- Direct OEM Replacement — this carburetor assembly installs in place of the original with no re-jetting or adaptation, since it is the same component Honda specified at the factory for GX610 and GX620 horizontal shaft engines
- Serial Number Verification Recommended — Honda supersedes carburetor part numbers at production serial breaks; check your engine's serial number against the fitment table to confirm this is the correct assembly for your unit
- Restores Full Engine Performance — a worn, clogged, or failed carburetor causes hard starting, rough idle, fuel flooding, and loss of power; replacing it with this genuine assembly restores proper fuel delivery and engine response
The carburetor assembly is responsible for mixing air and fuel in the correct ratio before delivery to the engine's combustion chamber. On GX610 and GX620 horizontal shaft engines, the carburetor controls fuel flow across idle, mid-range, and wide-open-throttle conditions, making it central to how the engine starts, idles, and responds under load. When a carburetor degrades — through wear, varnish buildup from stale fuel, or damage to internal metering components — the engine suffers from hard starting, erratic idling, fuel consumption issues, or a complete failure to run, and replacement with a matched OEM assembly is the most dependable path to restoring normal operation.
Part Details
| Part Number | 16100-Z6C-V21 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BG21S A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX610, GX620 | 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.
