The Honda 13310-Z6L-640 Crankshaft (L=129) is a genuine OEM component designed for GX630, GX660, and GX690 horizontal shaft engines. As a direct Honda OEM replacement, this crankshaft is manufactured to the same specification as the part that left the factory, ensuring proper bearing journal dimensions, stroke geometry, and PTO end sizing. Honda supersedes crankshaft part numbers at production serial breaks, so confirm your engine's serial number against the fitment table before ordering to make sure part number 13310-Z6L-640 is the correct application for your unit. The L=129 designation identifies this as a specific stroke variant.
Key Features
- Genuine Honda OEM Component — sourced directly from Honda, this crankshaft meets the exact journal dimensions, counterweight balance, and stroke specifications the GX630, GX660, and GX690 engines were engineered around
- Stroke Variant Identified — the L=129 designation specifies the stroke length of this crankshaft; verify this matches your engine's original specification before installing
- Broad Big-Block GX Fitment — covers Honda's GX630, GX660, and GX690 horizontal shaft engines, though serial number verification is essential as Honda issues revised part numbers across production runs
- Critical to Engine Output and Longevity — a worn or damaged crankshaft causes vibration, bearing failure, and loss of power; replacing it with the correct OEM part restores smooth operation and protects the bottom end of the engine
The crankshaft is the central rotating component of a four-stroke engine. It converts the up-and-down motion of the piston into the rotational force that drives whatever equipment the engine powers. In a large-displacement horizontal shaft engine like the GX630, GX660, and GX690, the crankshaft also carries the PTO end that connects to the driven load, making its dimensional accuracy directly responsible for proper coupling and smooth power delivery. When a crankshaft develops worn bearing journals, a bent shaft, or surface damage from a seizure event, the engine will run rough, consume oil rapidly, and eventually suffer catastrophic bearing failure — making timely replacement with the correct OEM part essential to restoring reliable service.
Part Details
| Part Number | 13310-Z6L-640 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Crankshaft (L=129) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX630, GX660, GX690 | 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.
