The Honda 90543-750-000 Mainshaft Washer C (17.2X28X3.35) is a genuine OEM component designed for HT3810, HT3813, and HT4213 lawn tractors. As a direct Honda OEM part, it is manufactured to the exact dimensions specified for these tractors, ensuring correct fitment at the mainshaft position. This washer is listed for the HT3810, HT3813, and HT4213 — confirm part number 90543-750-000 against your tractor's serial number and parts diagram before ordering, as Honda supersedes components at serial breaks. Sourcing a genuine replacement keeps the drivetrain assembly within Honda's original design tolerances.
Key Features
- Exact OEM Dimensions — at 17.2 x 28 x 3.35 mm, this washer matches the precise thickness and diameter Honda specifies for the mainshaft position, maintaining correct spacing and load distribution in the assembly
- Genuine Honda OEM Part — supplied directly through Honda's parts program, carrying the same specifications as the washer installed at the factory
- Lawn Tractor Fitment — listed for the HT3810, HT3813, and HT4213 Honda lawn tractors; verify your serial number against the fitment table to confirm this is the correct washer for your unit
- Serial Number Verification Recommended — Honda updates components at production serial breaks, so checking your tractor's serial number before ordering ensures you receive the right part
A mainshaft washer controls the axial spacing and load bearing between rotating components on the mainshaft of the tractor's drivetrain. By maintaining the correct clearance, this washer prevents unwanted endplay and ensures that adjoining components seat and rotate as designed. When a washer of this type wears thin, deforms, or goes missing, shaft movement increases, accelerating wear on surrounding components and potentially causing operational issues with the tractor's drive system.
Part Details
| Part Number | 90543-750-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Mainshaft Washer C (17.2X28X3.35) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HT3810, HT3813, HT4213 | 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.
