The Honda 90443-ZG3-000 Washer (15.5MM) is a genuine OEM replacement designed for GD320 and GD410 horizontal shaft diesel engines. This listing carries the qualifier (15.5MM); Honda's catalogue also lists a (10.1MM) variant for these same engines, so verify the correct size against your machine before ordering. As a genuine Honda part, it is produced to the same specifications as the original component that left the factory.
Key Features
- Genuine OEM Honda Part — sourced directly from Honda, ensuring the washer matches the original specification for GD320 and GD410 horizontal shaft diesel engines.
- Size Verification Required — this part is listed as (15.5MM); a separate (10.1MM) variant exists for the same engine models, so confirm which size your application requires before ordering.
- Direct OEM Replacement — drops in as a like-for-like replacement with no rework needed, restoring the clamping surface to its original condition.
- Serial Number Awareness — Honda supersedes hardware at production breaks, so cross-check your engine's serial number against the fitment table to confirm this is the correct part for your unit.
A washer serves as a load-distributing interface between a fastener and the surface it clamps. By spreading the clamping force over a wider area, it helps prevent the fastener from pulling through or deforming the mating surface, and it maintains consistent clamping load over time. On a diesel engine such as the GD320 or GD410 — which operates under higher compression and greater mechanical stress than a comparable gasoline engine — using the correct washer size is especially important: a washer that is too small concentrates load, while one that is too large may foul adjacent components or fail to seat properly.
Part Details
| Part Number | 90443-ZG3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Washer (15.5MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Diesel Engine | GD320, GD410 | 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.
