The Honda 16551-Z0D-010 Governor Arm is a genuine OEM replacement designed for GXR120 horizontal shaft engines. As an authentic Honda part, it meets the exact fit and dimensional requirements of the original component. Confirm your engine's serial number against the fitment table before ordering, as Honda periodically supersedes parts at production breaks.
Key Features
- Genuine OEM Accuracy — sourced directly from Honda, this Governor Arm matches the original geometry critical for correct governor linkage travel and engine speed response.
- Direct Replacement — engineered to the same specifications as the part it replaces, allowing straightforward installation without modification.
- GXR120 Fitment — built specifically for the GXR120 horizontal shaft engine; verify your serial number against the fitment table to confirm this is the correct governor arm for your unit.
- Engine Speed Stability — a worn or bent governor arm compromises the governor's ability to maintain consistent engine speed under load, leading to hunting, surging, or uncontrolled over-speed; replacing it restores stable governing.
The governor arm is a mechanical link within the engine's centrifugal governor system. As engine speed changes, the governor mechanism moves this arm, which in turn adjusts the throttle to maintain a steady, set speed under varying load conditions. When the arm is worn, bent, or loose on its shaft, the governor loses the mechanical leverage it needs to regulate throttle position accurately, causing the engine to surge, hunt for speed, or fail to hold its governed RPM — all of which reduce the effectiveness of whatever equipment the engine drives.
Part Details
| Part Number | 16551-Z0D-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Governor Arm |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GXR120 | 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.
