The Honda 14721-Z7E-800 Exhaust Valve (Stellite) is a genuine OEM component designed for Honda EB and EM series generators. As a direct Honda OEM replacement, this exhaust valve is manufactured to the same specification as the original, ensuring a proper seat and seal in the cylinder head. This part is confirmed for use with EB3800, EB4000, EB5000, EB6500, EM3800, EM4000, EM5000, and EM6500 generators — verify your unit's serial number against the fitment table to confirm part number 14721-Z7E-800 is the correct application for your machine.
Key Features
- Stellite-Faced Valve Head — the Stellite facing on this exhaust valve is specifically engineered to resist the high heat and corrosive exhaust gases that the valve face is exposed to with every combustion cycle, extending service life under demanding generator loads
- OEM-Spec Valve Geometry — stem diameter, head diameter, and seat angle match Honda's original design exactly, so this valve drops into the cylinder head without recutting or fitting work
- Broad Generator Fitment — suits EB3800, EB4000, EB5000, EB6500, EM3800, EM4000, EM5000, and EM6500 generators, including both the EB and EM lines; confirm your serial number before ordering, as Honda issues part supersessions at production breaks
- Restores Compression and Power Output — a worn or burned exhaust valve causes compression loss, hard starting, and reduced generator output; fitting a fresh valve restores the combustion seal and brings power delivery back to spec
The exhaust valve controls the exit of burned combustion gases from the cylinder. It opens on the exhaust stroke to release hot exhaust, then closes tightly against its seat to seal the combustion chamber during compression and combustion. Because the exhaust valve is exposed to the highest temperatures in the engine's valve train, it faces more thermal stress than its intake counterpart — the Stellite facing on this valve is specifically chosen to handle that environment. When an exhaust valve burns, pits, or fails to seat correctly, combustion pressure escapes past the valve face, robbing the engine of compression and causing the generator to run rough, produce less power, or fail to start reliably.
Part Details
| Part Number | 14721-Z7E-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Valve (Stellite) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3800, EB4000, EB5000, EB6500, EM3800, EM4000, EM5000, EM6500 | 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.
