The Honda 90303-V09-D01 Spindle Nut is a genuine OEM Spindle Nut designed for the HA4120 lawn tractor. As a direct Honda OEM replacement, this nut is produced to the same specification as the original hardware and is the correct part for restoring the deck spindle assembly to proper working order. Confirm your machine's serial number against the fitment table before ordering to ensure part number 90303-V09-D01 is the right application for your unit.
Key Features
- Genuine Honda OEM Hardware — sourced directly from Honda, this nut matches the original specification for thread form, dimensions, and torque retention on the HA4120 deck spindle.
- Exact-Fit Replacement — this part installs directly in place of the original, requiring no adaptation and ensuring the spindle is properly secured for consistent cutting performance.
- Serial Number Verification Recommended — Honda updates hardware at production breaks, so cross-check your HA4120's serial number against the fitment table to confirm this is the correct nut for your tractor.
The spindle nut secures the blade spindle on the HA4120 lawn tractor's cutting deck, holding the spindle assembly in place under the rotational loads generated during mowing. A loose, damaged, or missing spindle nut allows the spindle to shift, which compromises blade engagement and can cause uneven cutting or further damage to the deck assembly. Replacing a worn or stripped nut with the correct OEM part restores the clamping load needed to keep the spindle running true.
Part Details
| Part Number | 90303-V09-D01 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spindle Nut |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| 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.
