The Honda 16551-ZA0-L00 Governor Arm is a genuine OEM component designed for the H4514 lawn tractor. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring proper fit and function within the governor system. This part is built for the H4514 and carries the correct geometry to operate as intended — verify your unit's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks.
Key Features
- Genuine OEM Governance — sourced directly from Honda, this Governor Arm delivers the exact lever geometry the H4514 governor system requires to regulate engine speed correctly under load.
- Direct OEM Replacement — engineered to drop into the original mounting position on the H4514, restoring governor linkage without modification.
- H4514 Lawn Tractor Fitment — confirmed for the Honda H4514; cross-reference part number 16551-ZA0-L00 and your serial number against the fitment table to ensure this is the correct arm for your production range.
- Speed Control Integrity — a worn or bent governor arm allows engine speed to hunt, surge, or run uncontrolled; replacing this part restores stable, consistent throttle response under varying load conditions.
The governor arm is the mechanical link between the governor flyweights and the throttle plate. As engine load changes, the flyweights shift position and the arm translates that movement into a throttle adjustment, keeping engine speed steady regardless of demand placed on the tractor. When the arm is worn, bent, or broken, the governor loses the ability to make accurate corrections — the engine may surge at idle, bog under load, or run at an uncontrolled speed — making this a key component to inspect during any governor system service.
Part Details
| Part Number | 16551-ZA0-L00 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Governor Arm |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | H4514 | 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.
