5PA-12459-00-00 Water Pump Shaft with Gear for Yamaha YZ 85 YZ85 2002-2017
5PA-12459-00-00 Water Pump Shaft with Gear for Yamaha YZ 85 YZ85 2002-2017
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Water Pump Shaft with Gear for Yamaha YZ85
This water pump shaft with gear is a replacement component that drives the impeller inside the cooling system, helping circulate coolant through the engine on Yamaha YZ85 models. It cross-references OEM part 5PA-12459-00-00.
Overview
This water pump shaft with gear is built to fit Yamaha YZ85 machines from 2002 through 2017 and serves as a direct replacement for the original shaft assembly. Inside the water pump, the shaft transfers rotation from the engine to the impeller, keeping coolant moving and engine temperatures in check. It is aimed at riders and mechanics performing cooling system rebuilds or replacing a worn or seized shaft on a YZ85 water pump.
Built For Performance
- Direct replacement for OEM part number 5PA-12459-00-00
- Shaft and gear combined as a single unit for straightforward installation
- Manufactured to match the original YZ85 water pump dimensions
- Hardened shaft surface resists wear from continuous rotation
- Gear teeth cut for proper mesh with the water pump drive
- Compatible with 2002-2017 Yamaha YZ85 cooling systems
Fits These Machines
- for Yamaha YZ85 2002
- for Yamaha YZ85 2003
- for Yamaha YZ85 2004
- for Yamaha YZ85 2005
- for Yamaha YZ85 2006
- for Yamaha YZ85 2007
- for Yamaha YZ85 2008
- for Yamaha YZ85 2009
- for Yamaha YZ85 2010
- for Yamaha YZ85 2011
- for Yamaha YZ85 2012
- for Yamaha YZ85 2013
- for Yamaha YZ85 2014
- for Yamaha YZ85 2015
- for Yamaha YZ85 2016
- for Yamaha YZ85 2017
On-The-Job Use
- Water pump rebuilds on YZ85 engines
- Replacing a seized, bent, or worn water pump shaft
- Routine cooling system maintenance on motocross bikes
- Restoring coolant circulation after an engine rebuild
Specs At A Glance
| Part Number(s) | 5PA-12459-00-00 |
| Type | Water pump shaft with gear |
| Placement | Water pump assembly |
Good To Know
Q: Do I need to replace the seal when installing this shaft? A: It is good practice to replace the water pump seal and bearing at the same time, since reusing worn seals often leads to coolant leaks after assembly.
Q: How do I confirm this fits my YZ85? A: Check that your model year falls between 2002 and 2017 and that your existing shaft matches OEM number 5PA-12459-00-00 before ordering.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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