The Honda 16100-ZJ1-931 is a genuine OEM Carburetor Assembly (BKL0A A) designed for GX620 horizontal shaft engines. Sourced directly from Honda, this carburetor assembly carries the exact jetting, fuel metering calibration, and dimensional specifications Honda engineers set for this engine — there is no guesswork in the fitment. If your GX620 engine is running rough, starving for fuel, or failing to start, replacing the carburetor assembly with part number 16100-ZJ1-931 restores the precise air-fuel mixture the engine was built to run on.
Key Features
- Correct Fuel Metering — as a genuine OEM assembly, this carburetor ships with Honda-specified jets, emulsion tubes, and needle settings pre-calibrated for the GX620, so fuel delivery is right from the first start
- Direct OEM Replacement — engineered to drop into the GX620 carburetor position using the existing mounting points, fuel line connections, and throttle linkage, with no modification to surrounding components
- GX620 Fitment — confirm your engine's serial number against the fitment table before ordering; Honda supersedes carburetor assemblies at serial breaks, and part number 16100-ZJ1-931 covers specific production ranges of the GX620
- Sustained Engine Output — a correctly functioning carburetor holds the air-fuel ratio steady across the GX620's operating range; a worn or varnished carburetor causes lean stumbles, power loss, and hard starting under load
The carburetor is the component responsible for blending air and fuel in the correct proportion before the mixture enters the engine's combustion chamber. On a GX620 horizontal shaft engine, the carburetor assembly meters fuel through calibrated jets and passages, responds to throttle input, and adjusts delivery as engine load changes. When the carburetor's internal passages become clogged with varnish deposits or its jets and needle valves wear, the engine loses the ability to maintain a stable air-fuel ratio — resulting in rough idling, poor throttle response, excessive fuel consumption, or failure to start. Replacing the assembly with a genuine Honda unit brings the fuel system back to the specification the engine was designed around.
Part Details
| Part Number | 16100-ZJ1-931 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BKL0A A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | 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.
