5CU-12459-00-00 Water Pump Shaft with Gear for Yamaha YZ250X 2016-2017 YZ 250X

Water Pump Shaft with Gear for Yamaha YZ 250X

This water pump shaft with gear is a direct replacement component for the Yamaha YZ 250X, cross-referencing OEM part number 5CU-12459-00-00, designed to drive the impeller and maintain proper coolant circulation.

Overview

This water pump shaft with gear is built to restore coolant flow on the Yamaha YZ 250X for model years 2016 through 2017. The water pump shaft with gear engages the drive mechanism to spin the impeller, keeping engine temperatures in check during hard rides. A solid choice for riders and mechanics servicing the YZ250X cooling system with a dependable water pump shaft with gear.

Built For Performance

• Cross-references OEM part number 5CU-12459-00-00 for straightforward matching
• Integrated gear allows direct engagement with the drive mechanism
• Constructed from hardened steel for wear resistance in high-rpm conditions
• Precision-machined surfaces support smooth shaft rotation
• Seal-ready shaft diameter helps maintain a leak-free coolant system

Fits These Machines

• for Yamaha YZ 250X 2016
• for Yamaha YZ 250X 2017

On-The-Job Use

• Routine water pump rebuilds on the YZ250X
• Cooling system repair after seal or bearing failure
• Top-end service where the pump shaft shows wear
• Race prep and preventive maintenance for two-stroke motocross bikes

Specs At A Glance

Good To Know

Q: Does this shaft come with the gear attached? A: Yes, the gear is integrated with the shaft as a single assembly, matching the OEM design for this water pump.

Q: Should I replace the seals and bearing at the same time? A: It is good practice to inspect and replace the water pump seals and bearing during installation to avoid coolant leaks and premature wear.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.