The Honda 90304-V09-D01 Lock Nut D (8MM) is a genuine OEM Lock Nut D (8MM) designed for HA4118 and HA4120 lawn tractors. As a direct Honda OEM component, this nut is an exact match for the original hardware used in production, ensuring the correct thread pitch and clamping specification for its application on these tractors. Honda supersedes fastener part numbers at serial breaks, so confirm your tractor's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, this lock nut meets the same specification as the original fastener installed at the factory, delivering the holding force the application requires
- Exact 8MM Sizing — the (8MM) designation identifies the thread size; match this to your tractor's hardware to confirm you have the correct nut for your application
- HA4118 and HA4120 Fitment — listed for Honda HA4118 and HA4120 lawn tractors; check your serial number against the compatibility table, as Honda issues supersessions at serial production breaks
A lock nut is a fastener engineered to resist loosening under vibration and dynamic loads — conditions that lawn tractors encounter continuously during operation. Unlike a standard hex nut, a lock nut incorporates a locking mechanism that maintains clamping force even as the machine vibrates through rough terrain. When a lock nut becomes worn, stripped, or is replaced with the wrong specification, the joint it secures can work loose over time, compromising the integrity of the assembly it holds. Using the correct OEM replacement, part number 90304-V09-D01, ensures the fastener performs exactly as Honda intended for the HA4118 and HA4120.
Part Details
| Part Number | 90304-V09-D01 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Lock Nut D (8MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HA4118 | 6001210-9999999 |
| Lawn Tractor | HA4120 | 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.
