The Honda 90741-ZG3-000 Woodruff Key (50X7) is a genuine OEM component designed for GD320 and GD410 horizontal shaft diesel engines. As an authentic Honda part, it is manufactured to the exact dimensions required for correct shaft and hub alignment on these engines. This Woodruff Key (50X7) is the right choice for any rebuild or repair where the original key has been damaged, sheared, or lost — confirm fitment against your engine's serial number in the compatibility table below before ordering.
Key Features
- Genuine OEM Dimension Accuracy — manufactured to Honda's exact 50x7 specification, ensuring the key seats fully in both shaft and hub keyways without slop or misalignment
- Direct OEM Replacement — drops into the same keyway position as the original, with no fitting or modification needed to the shaft or hub
- Diesel Engine Application — sourced specifically for GD320 and GD410 horizontal shaft diesel engines; verify your engine's serial number against the fitment table to confirm the correct part
- Shaft Timing Integrity — a correctly seated Woodruff Key keeps the flywheel or driven component locked in its timed position; a sheared or worn key causes timing loss and prevents the engine from running correctly
A Woodruff Key is a small, semicircular drive key that fits into matching slots — one cut into the crankshaft, one into the hub of the flywheel or other driven component — to lock them in precise rotational alignment. This alignment is critical on a diesel engine, where injection timing depends on the flywheel sitting in exactly the right position relative to the crankshaft. When the key shears — typically from a sudden shock load or overtightened hub — the flywheel shifts out of position, timing is lost, and the engine will not start or run correctly. Replacing the Woodruff Key with the correct OEM part, part number 90741-ZG3-000, restores that alignment and gets the engine back in service.
Part Details
| Part Number | 90741-ZG3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Woodruff Key (50X7) |
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.
