Water Pump Impeller Kit – Fits Yamaha 25-30 HP (Replaces 61N-W0078-11-00, 61N-W0078-10-00) 110-146HP Install and tighten the mounting

Install and tighten the mounting bolts to the manufacturer-specified torque

Features a provision for the vent tube to the carburetor for safety

Signs of a failing thermostat gasket include visible coolant leaks around the thermostat housing

Mount the new fuel pump and tighten the bolts evenly to the manufacturer's specified torque

Sierra 18-2644

Water Pump Impeller Kit – Fits Yamaha 25-30 HP (Replaces 61N-W0078-11-00, 61N-W0078-10-00) 110-146HP Install and tighten the mountingProduct Details This Water Pump Impeller Kit Fits Yamaha 25 30 HP provides all necessary components to restore your engine's cooling system. It is engineered for a wide range of Yamaha 2 stroke outboard motors (25B, 25X, 30H, 30G series from 20002018) and 4 stroke models (F25, F25A, F25B from 19982019). Note: This kit does not fit F25C models. It serves as a direct replacement for Yamaha OEM parts 61N W0078 10 00, 61N W0078 11 00, 61N W0078 13 00, and