Water Pump Impeller 9.9/15 hp Yamaha Outboard 682-44352-03-00 Sierra 18-3074

Water Pump Impeller for Yamaha

This water pump impeller delivers reliable engine cooling for Yamaha outboard motors, replacing OEM 682-44352-03-00 and cross-referencing Sierra 18-3074.

Overview

The water pump impeller is a critical component that circulates coolant through the engine block, preventing overheating during operation. Designed for Yamaha 9.9hp and 15hp outboards, this impeller ensures consistent water flow for optimal performance and longevity.

Built For Performance

• Precision-molded rubber vanes for efficient water displacement
• Stainless steel insert hub for corrosion resistance
• Direct OEM replacement for 682-44352-03-00
• Compatible with Sierra 18-3074 cross-reference
• Rigorous quality testing to meet OEM specifications

Fits These Machines

• for Yamaha 9.9hp outboard
• for Yamaha 15hp outboard

On-The-Job Use

• Replaces worn impellers during routine water pump service
• Maintains proper engine temperature in saltwater and freshwater
• Ensures reliable cooling during trolling or high-speed runs

Specs At A Glance

Good To Know

Q: How often should I replace my water pump impeller? A: It is recommended to replace the impeller every 2-3 seasons or after 100 hours of use, whichever comes first, to prevent overheating damage.

Q: Can this impeller be used in saltwater? A: Yes, the corrosion-resistant hub and durable rubber vanes are designed to withstand saltwater environments, though rinsing with fresh water after each use is advisable.

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