The Honda 14721-Z4M-000 Exhaust Valve is a genuine OEM replacement designed for GX160 horizontal shaft engines, EU3000 inverter generators, WB20, WB30, WH15, WH20, WMP20, WT20, and WT30 water pumps, and the FC600 tiller. As a direct Honda OEM component, this exhaust valve is manufactured to the exact dimensions and metallurgical specifications Honda specifies for these applications, ensuring a proper drop-in fit with the existing valve train. Confirm your machine's serial number against the fitment table before ordering, as Honda updates part numbers at specific production breaks.
Key Features
- Genuine OEM Valve Integrity — manufactured by Honda to the precise head diameter, stem diameter, and seat angle required for correct exhaust gas sealing in these engines and power units
- Broad Equipment Compatibility — fits GX160 horizontal shaft engines, the EU3000 inverter generator, WB20, WB30, WH15, WH20, WMP20, WT20, and WT30 water pumps, and the FC600 tiller, including a wide range of the equipment they power
- Check Your Serial Number — Honda supersedes valve specifications at production breaks; verify your serial number against the fitment table to confirm part number 14721-Z4M-000 is correct for your unit
- Restores Full Engine Compression — a worn or burnt exhaust valve causes compression loss, hard starting, rough running, and reduced output; replacing it with this OEM part restores the combustion seal the engine depends on
The exhaust valve is a critical component of the engine's four-stroke combustion cycle. Seated in the cylinder head, it opens on the exhaust stroke to release burnt gases from the combustion chamber, then closes tightly to seal the chamber for the next compression and power stroke. When an exhaust valve wears, warps, or burns — often from prolonged high-temperature operation — the seal between the valve face and its seat deteriorates, allowing compression to escape. The result is a noticeable drop in power, difficult starting, and increased fuel consumption. Replacing a failed exhaust valve with a correct OEM part like this one is one of the most direct ways to restore an engine to its original performance.
Part Details
| Part Number | 14721-Z4M-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Valve |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX160 | All |
| Inverter Generator | EU3000 | All |
| Tiller | FC600 | 5197368-9999999 |
| Water Pump | WB20, WB30, WH15, WH20, WMP20, WT20, WT30 | 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.
