The Honda 90426-ZG3-000 Sealing Washer is a genuine OEM component designed for GD320 and GD410 horizontal shaft diesel engines. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring a proper seal without modification. This sealing washer is listed for both the GD320 and GD410 — confirm your engine's serial number against the fitment table to ensure you are ordering the correct part for your unit. Sourcing genuine OEM hardware like this washer is the most reliable way to maintain the integrity of the sealing surface it serves.
Key Features
- Genuine OEM Sealing Integrity — manufactured by Honda to original specifications, this washer delivers the sealing performance the GD-series diesel engine was designed around, preventing fluid leakage at the joint it serves.
- Direct OEM Replacement — supplied as a Honda genuine part under part number 90426-ZG3-000, this washer installs exactly as the original with no adaptation needed.
- GD-Series Diesel Fitment — listed for GD320 and GD410 horizontal shaft diesel engines; verify your serial number against the compatibility table before ordering, as Honda supersedes hardware at serial breaks.
A sealing washer is a precision hardware component used at threaded connections — typically on drain plugs, banjo fittings, or fluid passages — to create a leak-free seal when torqued down. Unlike a standard flat washer, it is designed to deform slightly under clamping load, filling microscopic surface irregularities to prevent oil, fuel, or coolant from escaping around the fastener. On a diesel engine like the GD320 or GD410, where reliable fluid containment is essential to sustained performance, a damaged or missing sealing washer can result in slow leaks that lead to low fluid levels and potential engine damage. Replacing this washer any time the associated fitting is disturbed is straightforward preventive maintenance.
Part Details
| Part Number | 90426-ZG3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Sealing Washer |
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.
