Sierra 18-3433 Water Pump Repair Kit for Yamaha Outboard Engines

The Sierra 18-3433 is a comprehensive water pump repair kit designed for Yamaha outboard engines. This kit provides all the essential components needed to restore your engine's cooling system to optimal performance without replacing the entire housing assembly.

Key Features:

• Complete repair kit includes impeller, insert cup, wear plate, bolts, and key
• Manufactured to meet or exceed OEM specifications for quality and performance
• Assembled in Sierra's Illinois facility with application-specific rubber compounds
• Designed for reliable operation in demanding marine environments
• Kit does not include housing (housing-less design for cost-effective repairs)

Applications:

This water pump kit is specifically designed for Yamaha outboard models including 9.9HP, 15HP, F6, F8, F9.9, F15, T8, T9.9, and T9.X engines (primarily 2005-2006 model years). It replaces Yamaha OEM part numbers 63V-W0078-00-00, 63V-W0078-01-00, and 63V-44301-00, as well as Mallory 9-48609 and 9-48617.

Sierra water pump components use specially formulated rubber compounds selected based on impeller size and intended application, ensuring optimal flexibility and durability. Each component is precision-engineered to deliver superior performance and reliability for your outboard, inboard, or sterndrive engine.