The Honda 90002-ZN4-A50 Drain Plug Bolt (12MM) is a genuine OEM Drain Plug Bolt designed for the GXV57 vertical shaft engine. As a direct Honda OEM component, this bolt is manufactured to the exact specifications of the original, ensuring a proper fit at the oil drain point. Verify your engine's serial number against the fitment table to confirm part number 90002-ZN4-A50 is correct for your unit before ordering.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this Drain Plug Bolt (12MM) matches the original component your GXV57 left the factory with, so there is no guesswork on thread pitch or head size.
- Oil-Tight Sealing — a correctly fitted drain plug bolt seats fully and holds a leak-free seal during operation, preventing oil loss that would otherwise lead to engine damage from running low on lubrication.
- 12MM Specification — the 12MM sizing is specific to this application; using the correctly sized bolt avoids thread damage to the drain port and ensures reliable removal at every oil change.
- Serial Number Verification Advised — Honda updates parts at production serial breaks, so confirm your engine's serial number against the compatibility table to ensure this is the right bolt for your GXV57.
The drain plug bolt closes the oil drain port at the base of the engine crankcase, sealing the oil supply inside the engine during operation. When it is time for an oil change, this bolt is removed to allow spent oil to drain fully before fresh oil is added. A damaged, stripped, or missing drain plug bolt cannot maintain a proper seal, which allows oil to escape and puts the engine at risk of running dry — a condition that causes rapid, severe internal wear.
Part Details
| Part Number | 90002-ZN4-A50 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Drain Plug Bolt (12MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV57 | 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.
