The Honda 16100-Z5T-781 Carburetor Assembly (BE94J A) is a genuine OEM Carburetor Assembly designed for the GX390 horizontal shaft engine. As a direct Honda replacement, this assembly carries the exact jetting, needle settings, and fuel metering calibration specified for the GX390 — ensuring the engine starts cleanly and runs at the fuel-air mixture Honda engineered it for. Confirm part number 16100-Z5T-781 and the BE94J A variant code against your engine's parts diagram before ordering.
Key Features
- Correct Fuel Metering — genuine OEM calibration means the jets, needle, and emulsion circuits match Honda's specification for the GX390, so the engine idles smoothly and delivers full power under load.
- Exact OEM Replacement — this carburetor assembly installs directly in place of the original unit on GX390 horizontal shaft engines with no adaptation required to the intake manifold or throttle linkage.
- Variant-Specific Fitment — the BE94J A designation identifies a specific carburetor configuration within the GX390 lineup; verify this variant code against your engine's parts diagram to confirm this is the correct assembly for your unit.
- Serial Number Awareness — Honda supersedes carburetor assemblies at production breaks, so always cross-reference your GX390 serial number against the fitment table to ensure part number 16100-Z5T-781 is current for your engine.
- Restored Starting and Running Performance — a worn or gummed carburetor causes hard starting, rough idling, and loss of power; replacing it with this genuine assembly returns the engine to clean, consistent operation.
The carburetor is responsible for mixing air and fuel in the precise ratio the engine needs to start, idle, and run under load. On the GX390 horizontal shaft engine, the carburetor assembly meters fuel from the tank, atomizes it with incoming air, and delivers that mixture to the combustion chamber through the intake port. When a carburetor degrades — through wear, varnish buildup from stale fuel, or a damaged float or needle — the engine loses the ability to regulate its own fuel supply, resulting in rough running, black smoke, fuel flooding, or a complete failure to start. Replacing a failing unit with a properly calibrated OEM assembly like this one restores the engine's fuel system to its original operating condition.
Part Details
| Part Number | 16100-Z5T-781 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BE94J A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX390 | 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.
