The Honda 12000-ZJ1-418 Cylinder Assembly is a genuine OEM Cylinder Assembly designed for GX610 and GX620 horizontal shaft engines. Sourced directly from Honda, this component meets the exact specifications of the original part it replaces, ensuring a proper fit without guesswork or modification. This assembly is the correct replacement for both the GX610 and GX620 — confirm your engine's serial number against the fitment table to be sure you are ordering the right variant for your specific unit.
Key Features
- Genuine Honda OEM Construction — machined and finished to Honda's own dimensional specifications for the GX610 and GX620, ensuring correct bore geometry, port alignment, and deck surface integrity
- Direct OEM Replacement — this assembly drops in as a like-for-like replacement, preserving the original mounting and interface points of your engine's core structure
- GX610 and GX620 Fitment — built specifically for these twin-cylinder horizontal shaft engines; verify your engine's serial number against the fitment table before ordering, as Honda supersedes cylinder assemblies at serial breaks
- Restored Engine Integrity — a damaged or worn cylinder compromises compression, oil control, and cooling efficiency; replacing it with a genuine assembly restores the engine's ability to deliver full, consistent power output
The cylinder assembly is the structural and functional core of the engine block. It houses the piston and rings, forms the combustion chamber walls, and provides the mounting points for the cylinder head, crankcase, and ancillary components. Coolant and oil passages are cast into the assembly, allowing heat to dissipate and lubricant to reach critical surfaces. When the cylinder bore is scored, cracked, or worn beyond service limits, compression drops, oil consumption rises, and the engine loses the ability to run efficiently — a condition that only a replacement cylinder assembly can fully correct.
Part Details
| Part Number | 12000-ZJ1-418 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Cylinder Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX610, GX620 | 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.
