Yamaha - Water Pump Repair Kit - 689-W0078-A6-00 - C25 C30Yamaha Water Pump Repair Kit Cooling System Component 689 W0078 A6 00 Overview Water pump kits are one of those maintenance items you dont skip if you want your motor to last. When the impeller starts to wear, cooling drops off fast, and thats when you get into trouble. Ive rebuilt a lot of these smaller Yamaha units, and having everything in one kit makes the job go a lot smoother. This setup gives you all the core pieces to get water flow back where