The Honda 90406-422-000 Lock Washer (8mm) is a genuine OEM replacement designed for H4514 and H4518 lawn tractors. Sourced directly from Honda, this washer carries the same part number used in Honda's own service documentation, so there is no guesswork about what you are ordering. Honda supersedes hardware at serial breaks, so confirm your tractor's serial number against the fitment table before ordering to make sure part number 90406-422-000 is the correct listing for your unit.
Key Features
- Genuine Honda OEM Hardware — manufactured to Honda's own specifications, ensuring dimensional accuracy for the 8mm fastener it pairs with on H4514 and H4518 lawn tractors
- Exact Replacement — drops in as a direct substitute for the original washer; no modification to the fastener assembly is needed
- Serial Number Verification Recommended — Honda updates hardware part numbers at production breaks, so cross-check your tractor's serial number against the compatibility table to confirm this is the correct listing for your machine
A lock washer is a hardened ring placed beneath a nut or bolt head to resist loosening caused by vibration and load cycling. On lawn tractors like the H4514 and H4518, fastener joints are subjected to continuous vibration from the engine and drivetrain, and a correctly fitted lock washer helps keep those connections secure over the service life of the machine. A missing or damaged washer allows the fastener to back out gradually, which can lead to loose assemblies and the need for more extensive repairs.
Part Details
| Part Number | 90406-422-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Lock Washer (8mm) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | H4514, H4518 | 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.
