The Honda 16580-ZH8-030 Control Base is a genuine OEM component designed for GX140, GX160, and GX200 horizontal shaft engines, Honda HS521, HS621 single-stage snow blowers, HS522, HS55, and HS622 two-stage snow blowers, and a broad range of Honda water pumps including the WA20, WA30, WB20, WB30, WD20, WD30, WH15, WH20, and WT20. As a direct Honda OEM part, this Control Base is manufactured to the exact specifications Honda requires for the throttle and governor control system it anchors. Confirm your machine's model and serial number against the fitment table before ordering, as Honda supersedes parts at production breaks and fit can vary across serial ranges.
Key Features
- Genuine Honda OEM — sourced directly from Honda's parts program, ensuring the mounting geometry and attachment points match the original component exactly.
- Broad Fitment — covers GX140, GX160, and GX200 horizontal shaft engines, select Honda snow blowers, and a wide range of Honda water pumps, including the WB20, WB30, WH15, WH20, WD20, WD30, WA20, WA30, and WT20.
- Serial Number Verification Recommended — Honda updates part specifications at production breakpoints; always cross-reference your unit's serial number with the fitment table to confirm this is the correct base for your machine.
- Throttle Control Integrity — a damaged or missing Control Base allows the throttle and governor linkage to shift out of position, causing erratic engine speed or loss of governor response; this replacement restores stable control.
The Control Base is the structural mounting platform for the engine's throttle and governor control assembly. It holds the control levers, linkage, and governor components in precise alignment so the governor can respond accurately to load changes and maintain consistent engine speed. When this base cracks, breaks, or becomes distorted, the control linkage loses its reference position, leading to hunting, surging, or an engine that cannot hold a steady governed speed under load — problems that affect the performance of every machine the engine powers.
Part Details
| Part Number | 16580-ZH8-030 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Control Base |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX140 | 3172542-9999999 |
| Horizontal Shaft Engine | GX160, GX200 | All |
| Single-Stage Snow Blower | HS521, HS621 | 6331305-9999999 |
| Two-Stage Snow Blower | HS55, HS522, HS622 | All |
| Water Pump | WH15, WH20 | 6331305-9999999 |
| Water Pump | WA20, WA30, WB20, WB30, WD20, WD30, WT20 | 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.
