The Honda 90003-ZE8-003 Special Head Cover Bolt is a genuine OEM fastener designed for GXV270 and GXV340 vertical shaft engines. As a direct Honda replacement, this bolt meets the exact specifications Honda set for these engines, ensuring the head cover seats correctly every time. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes fasteners at specific serial breaks.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this bolt matches the original specification for GXV270 and GXV340 vertical shaft engines, so there is no guesswork on thread pitch or head geometry.
- Correct Clamping Integrity — a properly torqued head cover bolt maintains the seal between the cover and the engine, keeping oil in and contaminants out; a stripped or incorrect bolt compromises that seal and invites leaks.
- Verify Your Serial Number — Honda updates fastener part numbers at production serial breaks, so cross-reference your engine's serial number with the fitment table to confirm part number 90003-ZE8-003 is the right bolt for your unit.
The head cover bolt secures the valve cover to the top of the engine on GXV270 and GXV340 vertical shaft engines, keeping the cover clamped firmly against its gasket. A correct, undamaged bolt holds the specified clamping load so the cover gasket can do its job — retaining oil and sealing out dirt around the valvetrain. When this bolt is damaged, cross-threaded, or missing, the head cover can work loose, leading to oil seepage and potential contamination of the valvetrain components beneath it.
Part Details
| Part Number | 90003-ZE8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Special Head Cover Bolt |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV270 | 1007530-9999999 |
| Vertical Shaft Engine | GXV340 | 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.
