The Honda 16100-Z4H-U51 is a genuine OEM Carburetor Assembly (BE62J A) designed for GX120 horizontal shaft engines. As a direct Honda OEM component, this carburetor assembly is manufactured to the exact specifications of the original unit, ensuring the fuel-air mixture, jetting, and metering circuits match what Honda engineered for this engine. Honda supersedes carburetor assemblies at serial breaks, so confirm your engine's serial number against the fitment table before ordering to make sure part number 16100-Z4H-U51 is the correct match for your unit.
Key Features
- Correct Jetting and Fuel Metering — genuine OEM construction means the fuel circuits, needle position, and main jet are calibrated exactly as Honda specified for the GX120, not approximated from a generic carb body
- Direct-Fit OEM Replacement — this carburetor assembly replaces the original unit on GX120 horizontal shaft engines with no reworking of fuel lines or throttle linkage
- Serial Number Verification Recommended — Honda issues multiple carburetor assemblies across the GX120 production run; check your engine's serial number against the fitment table to confirm this is the correct variant for your machine
- Restored Starting and Throttle Response — a worn or gummed carburetor causes hard starting, rough idle, and lean-running conditions; replacing it with a properly calibrated OEM unit brings fuel delivery 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 the GX120, a correctly functioning carburetor assembly delivers a consistent, metered fuel-air charge to the combustion chamber across the full throttle range. When a carburetor degrades — through varnish buildup from stale fuel, worn needle seats, or cracked bodies — the engine becomes difficult to start, surges at idle, runs lean under load, or refuses to hold a steady speed. Replacing the assembly with a genuine OEM unit restores the original fuel delivery characteristics and returns the engine to its designed operating condition.
Part Details
| Part Number | 16100-Z4H-U51 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BE62J A) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | 1000001-1170536 |
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.
