The Honda 16044-Z5T-901 Choke Set is a genuine OEM component designed for GX390 horizontal shaft engines and WT40 water pumps. As a factory-original part, it is manufactured to the same specifications as the unit it replaces, ensuring a direct, hassle-free installation with no guesswork. This choke set is the right call when your engine is hard to start cold or fails to deliver the fuel-rich mixture needed during warm-up.
Key Features
- Genuine OEM Choke Metering — sourced directly from Honda, this set delivers the correct choke plate geometry and spring tension for proper cold-start fuel enrichment on GX390 engines and WT40 water pumps.
- Direct OEM Replacement — engineered to replace the original choke assembly with no adaptation, restoring the carburetor's cold-start circuit to its original operating condition.
- Broad Application Coverage — fits GX390 horizontal shaft engines and WT40 water pumps; confirm your serial number against the fitment table before ordering, as Honda issues part supersessions at serial breaks.
- Restored Cold-Start Performance — a worn or damaged choke set causes difficult cold starts, rough warm-up, and excessive fuel consumption; replacing it brings the engine back to clean, consistent starting behavior.
The choke set is the assembly within the carburetor responsible for restricting airflow during a cold start, creating a richer fuel-to-air mixture that helps the engine fire and run smoothly before it reaches operating temperature. On engines like the GX390 and equipment such as the WT40 water pump, a properly functioning choke is essential for quick, reliable starting in cold or cool conditions. When the choke plate, spring, or related components wear or stick, the engine may crank repeatedly without catching, idle erratically during warm-up, or consume excess fuel until the issue is corrected.
Part Details
| Part Number | 16044-Z5T-901 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Choke Set |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX390 | All |
| Water Pump | WT40 | 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.
