The Honda 12251-Z1F-801 Cylinder Head Gasket is a genuine OEM replacement designed for GXV340 vertical shaft engines. As a direct Honda OEM component, this gasket is manufactured to the exact specification required for a proper combustion seal between the cylinder head and the engine block. Confirm your engine's serial number against the fitment table to ensure part number 12251-Z1F-801 is the correct application for your unit before ordering.
Key Features
- OEM Combustion Integrity — as a genuine Honda part, this Cylinder Head Gasket is engineered to maintain the precise clamping and sealing performance the GXV340 engine requires to hold combustion pressure and keep coolant and oil passages separated
- Exact-Fit Replacement — designed as a direct replacement for GXV340 vertical shaft engines, this gasket installs without modification and seats correctly against Honda's own head and block surfaces
- Serial Number Verification Recommended — Honda updates components at serial breaks, so cross-check your engine's serial number against the fitment table to confirm this is the right gasket revision for your GXV340
- Prevents Costly Engine Damage — a failed or blown cylinder head gasket allows combustion gases to escape, disrupts compression, and can allow oil or coolant to migrate where it does not belong; replacing it promptly with the correct OEM part restores proper engine operation
The cylinder head gasket forms the critical seal between the cylinder head and the engine block on the GXV340 vertical shaft engine. It must contain combustion pressure during every power stroke while simultaneously sealing the engine's oil and any coolant passages routed through that joint. When a head gasket fails — whether from overheating, improper torquing, or age — compression drops, the engine loses power, and internal contamination can follow quickly. Installing the correct replacement gasket is essential to restoring full compression and keeping the engine running as it should.
Part Details
| Part Number | 12251-Z1F-801 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Cylinder Head Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| 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.
