The Honda 14721-Z6L-000 Exhaust Valve is a genuine OEM Exhaust Valve designed for GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines, GXV630, GXV660, and GXV690 vertical shaft engines, and the EB10000 generator. As a direct Honda OEM component, this exhaust valve is manufactured to the same tolerances and specifications as the part that left the factory, ensuring a proper seat, correct stem diameter, and the right head geometry for each engine family it covers. Honda supersedes parts at serial-number breaks, so confirm your machine's serial number against the fitment table before ordering to make sure part number 14721-Z6L-000 is the correct valve for your unit.
Key Features
- Genuine Honda OEM Construction — manufactured to Honda's own valve specifications, covering correct head diameter, stem dimensions, and face angle for consistent sealing against the valve seat across the GX and GXV large-displacement series and the EB10000 generator
- Broad Multi-Platform Coverage — fits GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines, GXV630, GXV660, and GXV690 vertical shaft engines, and EB10000 generators, including a wide range of serial-number production runs
- Serial-Number Verification Recommended — Honda updates valve specifications at production breaks; always match your machine's serial number to the fitment table to confirm part number 14721-Z6L-000 is the right exhaust valve for your specific unit
- Compression and Exhaust Sealing Integrity — a properly functioning exhaust valve seats cleanly at the top of each exhaust stroke; a worn or burnt valve allows combustion gases to escape past the seat, causing compression loss, rough running, and accelerated engine wear
The exhaust valve opens and closes in precise sequence with the engine's camshaft to release spent combustion gases from the cylinder after each power stroke. It must seat perfectly against the valve seat every cycle to maintain cylinder compression and prevent hot exhaust gases from leaking back into the combustion chamber between strokes. When an exhaust valve wears, burns, or loses its seating surface, compression drops, power output falls off noticeably, and the engine may run rough or produce excessive exhaust smoke — symptoms that call for immediate valve inspection and replacement.
Part Details
| Part Number | 14721-Z6L-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Valve |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB10000 | All |
| Horizontal Shaft Engine | GX630, GX660, GX690, GX700, GX800 | All |
| Vertical Shaft Engine | GXV630, GXV660, GXV690 | 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.
