Water Pump Rebuild Kit for Yamaha YZ450FX YZ 450FX 2016-2018

Water Pump Rebuild Kit for Yamaha YZ450FX

This water pump rebuild kit restores the cooling system on the Yamaha YZ450FX, replacing worn seals, bearings, and gaskets so coolant stays contained and the impeller spins freely.

Overview

This water pump rebuild kit for Yamaha brings the cooling system on your YZ450FX back to working condition. The kit addresses the seals, bearing, and gaskets that wear out over time, helping prevent coolant leaks and overheating during rides. It suits riders and mechanics handling routine maintenance or a full cooling system refresh on the YZ450FX.

Built For Performance

• Complete kit covers seals, bearing, gasket, and related water pump wear items
• Built to match the YZ450FX water pump housing for a direct fit
• Seal materials resist coolant exposure and heat cycling
• Bearing designed to handle continuous impeller rotation
• Gaskets sized to seal the pump cover against the case

Fits These Machines

• for Yamaha YZ450FX 2016
• for Yamaha YZ450FX 2017
• for Yamaha YZ450FX 2018

On-The-Job Use

• Rebuilding a leaking water pump during routine engine service
• Restoring cooling performance on a high-hour YZ450FX
• Preventive replacement before coolant loss causes overheating
• Track or trail maintenance where cooling reliability matters

Specs At A Glance

Good To Know

Q: What does a water pump rebuild kit typically include? A: Rebuild kits generally bundle the mechanical seal, oil seal, bearing, gasket, and related wear parts needed to service the pump. Confirm the kit contents match your YZ450FX before installing.

Q: How often should the water pump be rebuilt? A: Many riders rebuild when they notice coolant weeping, a noisy bearing, or during a top-end service interval. Inspecting the pump each season helps catch wear early.

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