ProX Racing Parts Water Pump Rebuild Kit 57.2324 — Yamaha YZ250F / YZ250FX / WR250F 2014-2019

Product Description

Prevent destructive overheating and restore complete cooling efficiency to your four-stroke race machine with the ProX Racing Parts Water Pump Rebuild Kit. Over hours of aggressive riding, cooling system seals decay from thermal shock, and internal pump bearings slowly develop play. This master repair package serves as a heavy-duty cooling upgrade solution, engineered specifically to withstand the elevated pressures, high RPMs, and demanding operational temperatures of modern Yamaha 250cc powerplants.

Manufactured strictly from premium-grade, wear-resistant base materials, this water pump repair kit comes fully stocked with all components required to complete a professional overhaul. The kit includes precision-matched water pump bearings to ensure smooth shaft rotation, specialized high-pressure oil and mechanical fluid seals, and exact-fit replacement gaskets and O-rings. By sealing out contaminants and containing your coolant loop completely, this kit protects your high-dollar engine internals from catastrophic cross-fluid contamination.

Top Features: ProX Water Pump Rebuild Kit
o All-in-one overhaul package includes premium bearings, mechanical oil seals, gaskets, and O-rings.
o Precision-manufactured bearings ensure smooth shaft rotation and reduce valvetrain parasitic drag.
o High-grade rubber and elastomeric compounds provide long-lasting resistance against harsh coolants.
o Engineered to meet exact factory OEM dimensions for a secure, drop-in replacement fit.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this repair kit include the internal water pump shaft?
A: No, this kit includes the vital bearings, mechanical seals, gaskets, and O-rings required for an overhaul, but does not include a replacement metal impeller shaft itself.

Q: What are the primary warning signs that my water pump needs a rebuild?
A: The most common indicator is coolant consistently weeping out of the small "tell-tale" weep hole located directly underneath the water pump housing on the engine case, or noticing milky-looking oil caused by coolant bleeding into the crankcase.

Q: Are the bearings included in this kit up to factory racing specifications?
A: Yes, ProX sources high-speed precision bearings that meet or exceed OEM specifications to ensure low friction and stable performance at maximum engine RPM.

Expert Pro-Tip: Pay absolute attention to the direction of the water pump seals when pressing them into the engine casing. Installing a mechanical or oil seal backwards is the most common reason a brand-new water pump rebuild fails instantly on startup. Lightly grease the lips of the seals and use a socket that matches the outer diameter of the seal casing to push it in perfectly level—never force it with a hammer or punch that can pinch or distort the delicate sealing edges.

Recommended Pairings:
o Yamaha YZ250F / YZ250FX Performance Parts & Upgrades
o Yamaha 4-Stroke Performance Parts
o Premium Motorcycle Chemicals & Coolants

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