The Honda 90435-611-000 Special Washer (28X8.5X4.0) is a genuine OEM component designed for a wide range of Honda engines, generators, riding mowers, lawn tractors, and two-stage snow blowers, including the GX640, EM5000, H3011, H3013, H4518, H5518, H6522, HS522, HS55, HS622, HS70, and HS80. As a genuine Honda part, it meets the exact dimensional standards Honda specifies for this application. Confirm the fitment table against your unit's model and serial number before ordering, as Honda applies specific washer variants across production runs.
Key Features
- Genuine OEM Dimensions — manufactured to Honda's exact 28 x 8.5 x 4.0 mm specification, ensuring the washer seats correctly and performs as Honda intended
- Direct OEM Replacement — this washer drops in as a like-for-like replacement with no modification, maintaining the clamping relationship Honda engineered into the assembly
- Broad Model Coverage — listed for the GX640 horizontal shaft engine, EB12 and EM5000 generators, H-series riding mowers and tractors, and HS-series two-stage snow blowers, including the HS522, HS55, HS622, HS70, and HS80
- Verify Before You Order — Honda supersedes washers and hardware at serial-number breaks; check your machine's serial number against the fitment table to confirm part number 90435-611-000 is correct for your unit
A special washer of this type serves as a precision load-distributing component within an assembly, spreading clamping force evenly across the contact surface and preventing deformation of the parts it bears against. Its non-standard dimensions — 28 mm outer diameter, 8.5 mm inner diameter, and 4.0 mm thickness — are specific to the application rather than drawn from a standard hardware range, which is why using the exact Honda part matters. A washer that is the wrong size, thickness, or bore diameter can allow fasteners to loosen under vibration or cause uneven loading that accelerates wear on surrounding components.
Part Details
| Part Number | 90435-611-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Special Washer (28X8.5X4.0) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | H6522 | 1000001-1003993 |
| Generator | EB12 | 1000001-1002995 |
| Generator | EM5000 | All |
| Horizontal Shaft Engine | GX640 | All |
| Lawn Tractor | H4518 | All |
| Multi-Purpose Tractor | H5518 | All |
| Riding Mower | H3011, H3013 | All |
| Two-Stage Snow Blower | HS55, HS70, HS80, HS522, HS622 | 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.
