The Honda 16571-Z4H-010 Control Lever is a genuine OEM component designed for GX120 horizontal shaft engines and WB20, WB30, WH15, and WH20 water pumps. As a factory-original part, it is manufactured to the same specification as the lever that came on your machine. Honda supersedes parts at serial-number breaks, so confirm your unit's serial number against the fitment table before ordering to ensure this is the correct version for your machine.
Key Features
- Genuine OEM Throttle Control — factory-original construction ensures the lever engages and releases with the same travel and feel Honda engineered into the GX120 engine and the WB and WH water pump lines
- Direct Replacement — replaces the original lever without alteration, slotting into the existing linkage hardware on your engine or pump
- Broad Fitment — covers GX120 horizontal shaft engines and WB20, WB30, WH15, and WH20 water pumps; use part number 16571-Z4H-010 to confirm the match for your specific unit
- Serial Number Verification Recommended — Honda updates part revisions at production breaks, so check your machine's serial number against the fitment table to confirm this lever applies to your serial range
- Throttle Response and Control — a worn or damaged control lever leads to imprecise throttle positioning, making it difficult to hold a steady engine speed under load; replacing it restores clean, positive throttle control
The control lever is the mechanical link between the operator's throttle input and the engine's carburetor or governor linkage. When the operator moves the throttle, the lever translates that motion into a change in fuel delivery or governor position, allowing the engine speed to be raised, lowered, or held at a set point. On water pumps such as the WB20, WB30, WH15, and WH20, maintaining accurate throttle control is essential for steady output pressure and flow — a lever that is bent, cracked, or worn at its pivot will produce erratic engine response and inconsistent pump performance.
Part Details
| Part Number | 16571-Z4H-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Control Lever |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | All |
| Water Pump | WB20, WB30, WH15, WH20 | 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.
