The Honda 90421-750-000 Plain Washer (12MM) is a genuine OEM replacement designed for H4013, H4514, H4518, HT3810, HT3813, and HT4213 lawn tractors. As a direct Honda OEM component, this washer matches the original specification exactly, ensuring the correct fit without guesswork or adaptation. Always confirm your tractor's serial number against the fitment table, as Honda supersedes parts at serial breaks and your unit may call for a different version.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this washer matches the original part replaced on the production line, so you know it seats and loads the way Honda intended.
- Correct 12MM Sizing — the 12MM designation is the critical match point; verify your tractor's parts diagram confirms this size before ordering.
- Broad Lawn Tractor Coverage — listed for the H4013, H4514, H4518, HT3810, HT3813, and HT4213 Honda lawn tractors, covering a wide span of the H and HT series lineup.
- Serial Number Verification Advised — Honda updates part numbers across production runs, so cross-check your tractor's serial number against the fitment table to confirm this is the correct washer for your specific unit.
A plain washer distributes the clamping load of a fastener across a broader surface area, preventing the bolt head or nut from pulling into or damaging the material it bears against. On a lawn tractor, washers like this one are used throughout the assembly wherever consistent load distribution and a secure connection are required. When a washer is missing, deformed, or the wrong size, fastener connections can loosen over time or the mating surfaces can be damaged, compromising the integrity of the assembly.
Part Details
| Part Number | 90421-750-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Plain Washer (12MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HT3810, HT3813, HT4213 | 5009128-9999999 |
| Lawn Tractor | H4013, 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.
