The Honda 14721-Z4V-900 Exhaust Valve is a genuine OEM Exhaust Valve designed for GX200 horizontal shaft engines, EB2500, EB3000, EM2500, and EM3000 generators, EU3000 inverter generators, HS724 and HSS724 two-stage snow blowers. As a direct Honda OEM part, this exhaust valve is manufactured to the exact specifications Honda requires, ensuring a proper drop-in fit without guesswork. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and more than one valve configuration may be listed for these models.
Key Features
- Genuine OEM Exhaust Valve — sourced directly from Honda, this valve is manufactured to the same specifications as the original, ensuring correct head seating, stem diameter, and valve face geometry for proper combustion sealing
- Broad Cross-Equipment Fitment — compatible with GX200 horizontal shaft engines, EB2500, EB3000, EM2500, and EM3000 generators, EU3000 inverter generators, and HS724 and HSS724 two-stage snow blowers, including the equipment each powers or houses
- Serial Number Verification Recommended — Honda updates valve specifications at production serial breaks; check your unit's serial number against the fitment table to confirm this is the correct valve for your machine
- Combustion Efficiency — a properly seating exhaust valve maintains compression and allows spent gases to exit cleanly, keeping the engine running at full power; a worn or burned valve causes hard starting, loss of compression, and reduced output
The exhaust valve is a precision engine component that opens on the exhaust stroke to release combustion gases from the cylinder, then closes tightly to seal the combustion chamber during compression and power strokes. Its valve face must seat accurately against the cylinder head to maintain compression — even minor wear or pitting on the seat or face allows pressure to leak past the valve, resulting in a noticeable drop in power, rough running, and difficulty starting. Replacing a worn exhaust valve restores compression to specification and allows the engine to deliver consistent, full-power operation across its service life.
Part Details
| Part Number | 14721-Z4V-900 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Valve |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB2500, EB3000, EM2500, EM3000 | 1176398-9999999 |
| Horizontal Shaft Engine | GX200 | All |
| Inverter Generator | EU3000 | 1181771-9999999 |
| Two-Stage Snow Blower | HS724, HSS724 | 1254842-9999999 |
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.
