The Honda 16221-Z5K-000 Carburetor Gasket is a genuine OEM replacement designed for a wide range of Honda engines and equipment, including GX240 and GX270 horizontal shaft engines, EB4000, EB5000, EB6500, EG4000, EM4000, EM5000, and EM6500 generators, HS928 and HS1332 two-stage snow blowers, HSS928 and HSS1332 two-stage snow blowers, WT20 and WT30 water pumps, and the FRC800 tiller. As a genuine Honda part, this carburetor gasket is manufactured to the same specification as the component installed at the factory, ensuring a proper seal without the guesswork that comes with non-OEM alternatives. Because Honda supersedes parts across serial number breaks, confirm the fitment table matches your unit's serial number before ordering.
Key Features
- Genuine Honda OEM Seal — manufactured to Honda's exact material and dimensional specification, delivering the consistent fuel-tight seal this carb interface requires
- Direct Replacement — drops in as a direct swap for the original gasket with no modification needed, restoring the carburetor-to-engine joint as built
- Broad Honda Compatibility — a single part number covering GX240 and GX270 engines, EB, EG, and EM generators, HS and HSS two-stage snow blowers, WT water pumps, and the FRC800 tiller; verify your serial number against the fitment table
- Fuel System Integrity — a failed or compressed carburetor gasket allows air and fuel vapors to escape the joint, causing lean running, rough idle, and hard starting; replacing it restores clean combustion and stable throttle response
The carburetor gasket seals the mating surface between the carburetor body and the engine's intake port. Its job is to hold a fuel-tight, air-tight joint so that the air-fuel mixture entering the engine is metered exactly as the carburetor's jets dictate — no more, no less. When this gasket hardens, cracks, or compresses over time, unmetered air enters the intake tract, leaning out the mixture and causing symptoms like erratic idle, surging, hard cold starts, or fuel odor around the carburetor. Replacing it with the correct OEM gasket, part number 16221-Z5K-000, restores the sealed interface and brings fuel delivery back to spec.
Part Details
| Part Number | 16221-Z5K-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB4000, EB5000, EB6500, EG4000, EM4000, EM5000, EM6500 | All |
| Horizontal Shaft Engine | GX240, GX270 | All |
| Tiller | FRC800 | All |
| Two-Stage Snow Blower | HS928, HS1332, HSS928, HSS1332 | All |
| Water Pump | WT20, WT30 | 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.
