The Honda 13310-Z0S-850 Crankshaft is a genuine OEM Crankshaft designed for GX120 horizontal shaft engines and WB20, WB30, WH15, and WH20 water pumps. As a factory-original component, this crankshaft is manufactured to Honda's exact tolerances, ensuring proper bearing fit, stroke geometry, and power takeoff alignment right out of the box. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes crankshaft part numbers at production breaks.
Key Features
- Genuine OEM Precision — manufactured to Honda's exact stroke and journal dimensions, this crankshaft delivers the tight bearing clearances and consistent power stroke that keep GX120 engines and Honda water pumps running at full output
- Direct OEM Replacement — engineered to drop into the crankcase as an exact substitute for the original, with correct PTO geometry and journal sizing for proper bearing and seal engagement
- Broad Fitment — covers the GX120 horizontal shaft engine as well as WB20, WB30, WH15, and WH20 water pumps; use the model and serial number on your machine to confirm the correct application
- Serial Number Matters — Honda issues crankshaft supersessions at specific production breaks, so always verify your unit's serial number against the fitment table to ensure this is the right part for your machine
- Core to Engine Output — a worn or damaged crankshaft causes vibration, bearing failure, and loss of power transfer; replacing it with a genuine part restores smooth rotation and full mechanical efficiency
The crankshaft is the central rotating component of a four-stroke engine. It converts the linear force of the piston's power stroke into the rotational output that drives the pump impeller, PTO shaft, or any other load connected to the engine. A crankshaft that is worn, bent, or has damaged journals will cause excessive vibration, accelerated bearing wear, and ultimately catastrophic engine failure — making timely replacement with a genuine OEM part critical to keeping the engine and the equipment it powers in service.
Part Details
| Part Number | 13310-Z0S-850 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Crankshaft |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX120 | All |
| Water Pump | WB20, WB30, WH15, WH20 | 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.
