The Honda 16221-ZG8-000 Carburetor Gasket is a genuine OEM replacement designed for a wide range of Honda horizontal and vertical shaft engines, generators, lawn tractors, multi-purpose tractors, and commercial mowers. As a direct OEM part, this gasket is built to Honda's exact specifications, ensuring a proper seal between the carburetor and the engine for consistent, leak-free fuel delivery. This Carburetor Gasket fits the GX610, GX620, GX640, GXV610, and GXV620 engines, as well as the EB11000 generator, H4013, H4514, H4518, HA4118, and HA4120 lawn tractors, the H5518 multi-purpose tractor, and HRC7018 and HRC7020 commercial mowers. Always confirm fitment against your machine's serial number before ordering, as Honda supersedes parts at production breaks.
Key Features
- Genuine OEM Seal Integrity — sourced directly from Honda, this gasket delivers the exact compression and material properties needed to maintain an airtight carburetor-to-engine interface and prevent fuel or air leaks that disrupt mixture quality.
- Broad Fitment Coverage — compatible with GX610, GX620, GX640, GXV610, and GXV620 engines, the EB11000 generator, H-series and HA-series lawn tractors, the H5518 multi-purpose tractor, and HRC7018 and HRC7020 commercial mowers, including both horizontal and vertical shaft applications.
- Drop-In Replacement — manufactured to Honda's original dimensions, this Carburetor Gasket installs without modification and seats correctly the first time, making it well suited to field or shop service.
- Serial Number Verification Recommended — Honda updates part applications at specific serial breaks, so cross-check your machine's serial number against the fitment table to confirm part number 16221-ZG8-000 is correct for your unit.
- Protects Fuel System Performance — a failed or compressed carburetor gasket allows unmetered air into the fuel circuit, causing lean running, rough idling, and hard starting; replacing it restores proper air-fuel metering across the engine's operating range.
The carburetor gasket forms the sealing interface between the carburetor body and the engine's intake port. Its job is to prevent air from entering the fuel circuit outside of the metered path through the carburetor — any leak at this joint leans out the mixture, causing symptoms that can range from difficult starting and rough idle to surging under load. When a carburetor gasket hardens, compresses, or cracks with age and heat cycles, those symptoms appear and worsen until the gasket is replaced. Fitting a genuine Honda replacement restores the precise seal the carburetor relies on to deliver accurate fuel metering across all throttle positions.
Part Details
| Part Number | 16221-ZG8-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7018, HRC7020 | All |
| Generator | EB11000 | All |
| Horizontal Shaft Engine | GX610, GX620, GX640 | All |
| Lawn Tractor | H4013, H4514 | 1263020-9999999 |
| Lawn Tractor | H4518, HA4118, HA4120 | All |
| Multi-Purpose Tractor | H5518 | All |
| Vertical Shaft Engine | GXV610, GXV620 | 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.
