The Honda 12251-ZF5-000 Cylinder Head Gasket is a genuine OEM component designed for GXV390 vertical shaft engines, Honda H-series lawn tractors, H-series riding mowers, and HRC-series commercial mowers. As a direct Honda OEM part, this cylinder head gasket is manufactured to the exact specifications required for a proper combustion seal in every application it covers. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes gasket part numbers at production breaks and the correct gasket varies by engine revision.
Key Features
- Combustion Integrity — a genuine OEM cylinder head gasket seals the mating surface between the cylinder head and the engine block, maintaining compression and preventing coolant or combustion gases from escaping into the wrong passages
- Exact OEM Specification — sourced directly from Honda, this gasket matches the original thickness and bore dimensions required for proper head torque and combustion sealing on GXV390 engines and the equipment they power
- Broad Fitment — covers the GXV390 vertical shaft engine across Honda H-series lawn tractors, H-series riding mowers, and HRC-series commercial mowers, including the H2013, H2113, H3011, H3013, H4013, H4514, H4518, HRC7013, and HRC7113
- Serial Number Verification — Honda updates gasket specifications at production breaks, so always match your machine's serial number to the fitment table to confirm this is the right version for your unit
The cylinder head gasket sits between the cylinder head and the engine block, forming a gas-tight seal that holds combustion pressure inside the cylinder where it belongs. Without a sound gasket, compression leaks past the joint, causing hard starting, loss of power, and overheating as combustion gases escape or oil and coolant migrate where they should not. Replacing a blown or compressed gasket with a correct-fit Honda OEM part restores the clamping seal and brings the engine back to full operating condition.
Part Details
| Part Number | 12251-ZF5-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Cylinder Head Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7013, HRC7113 | All |
| Lawn Tractor | H2013, H2113, H4013, H4514, H4518 | All |
| Riding Mower | H3011, H3013 | All |
| Vertical Shaft Engine | GXV390 | 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.
