The Honda 16251-ZA1-000 Choke Lever Seal is a genuine OEM component designed for Honda EB4000, EM4000, EMS4000, EMS4500, EX3300, EX4500, and EX5500 generators. As a direct Honda OEM part, it is manufactured to the same specification as the original — ensuring a proper seal at the choke lever interface right out of the box. Confirm your generator's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks and serial ranges can determine the correct version for your unit.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this seal matches the original specification for the choke lever bore, delivering the fit.
- Fuel System Integrity — a correctly seating choke lever seal prevents air intrusion and fuel vapor leakage at the choke shaft, keeping the carburetor's fuel metering on-spec and starting behavior consistent.
- Broad Generator Fitment — covers the EB4000, EM4000, EMS4000, EMS4500, EX3300, EX4500, and EX5500 generator lines, including both conventional and extended-run models in that family.
- Serial Number Verification Recommended — Honda updates part supersessions at specific production breaks; cross-check your generator's serial number against the compatibility table to confirm this is the right seal for your unit.
The choke lever seal sits at the point where the choke shaft passes through the carburetor body on these Honda generators. Its job is to prevent unmetered air from entering the fuel circuit around the choke shaft, which would lean out the mixture and make cold starting unpredictable. When this seal deteriorates or cracks, rough cold starts, hesitation, and inconsistent choke response are common symptoms — replacing it restores the carburetor's designed fuel-to-air ratio at the choke stage and brings starting performance back to normal.
Part Details
| Part Number | 16251-ZA1-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Choke Lever Seal |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EX3300 | 1003650-9999999 |
| Generator | EB4000, EM4000, EMS4000, EMS4500, EX4500, EX5500 | 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.
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