The Honda 14721-ZE2-810 Exhaust Valve (Stellite) is a genuine OEM component designed for Honda EB, EM, EG, EN, EW, and EZ series generators, including the EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EM3500, EM3800, EM4000, EM5000, EM6500, EN3500, EN5000, EW140, EX3300, EZ3500, and EZ5000. As a direct OEM replacement, this exhaust valve is sourced from Honda and carries the same specification as the part that left the factory. Because Honda supersedes parts at serial-number breaks, confirm your generator's serial number against the fitment table before ordering to make sure part number 14721-ZE2-810 is the correct valve for your unit.
Key Features
- Stellite-Faced Exhaust Valve — the Stellite facing is specified by Honda for the exhaust position, where valve-face temperatures and hot-gas exposure are highest; this is the correct OEM grade for this application, not a general-purpose substitute.
- Genuine OEM Part — sourced directly from Honda, this exhaust valve meets the same dimensional and metallurgical specifications as the original, ensuring correct stem diameter, face angle, and head geometry for a proper valve-seat seal.
- Broad Generator Fitment — compatible with a wide range of Honda generator models including the EB, EM, EG, EN, EW, EZ, and EX lines; check your serial number against the fitment table to confirm applicability to your specific unit.
- Restores Full Compression — a worn or burned exhaust valve causes compression loss, hard starting, and reduced power output; replacing it with this OEM part brings combustion sealing back to specification and restores engine performance.
The exhaust valve controls the opening and closing of the exhaust port in the cylinder head, allowing spent combustion gases to exit the cylinder at precisely the right moment in the engine's cycle. It works under extreme heat and pressure on every power stroke, and over time the valve face and stem can wear, pit, or burn — leading to a loss of compression, rough running, difficult starting, and a noticeable drop in the generator's power output. Replacing a failed exhaust valve with the correct OEM part restores a proper gas-tight seal against the valve seat, bringing combustion efficiency and compression back to where they need to be for dependable generator operation.
Part Details
| Part Number | 14721-ZE2-810 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Valve (Stellite) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EM3500, EM3800, EM4000, EM5000, EM6500, EN3500, EN5000, EX3300, EZ3500, EZ5000 | All |
| Welder Generator | EW140 | 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.
