Sierra 18-32455 Water Pump Impeller for Honda Outboard Motors

The Sierra 18-32455 is a premium replacement water pump impeller designed specifically for Honda 4-stroke outboard motors. This critical cooling system component ensures proper water flow through your engine, preventing overheating and maintaining optimal performance on the water.

Key Features:

• Direct replacement for Honda OEM part numbers 19210-ZW9-A31 and 19210-ZW9-A32
• Precision-engineered to meet or exceed original equipment specifications
• Constructed from high-quality neoprene material for durability and longevity
• Designed for Honda 8HP, 9.9HP, 15HP, and 20HP outboard motors (2001 and newer)
• Compatible with water pump repair kit 18-3478 for complete service
• Engineered to withstand harsh marine environments and temperature extremes

Sierra marine parts are manufactured to OEM standards, providing reliable performance and proper fit. Regular impeller replacement is essential for maintaining your outboard's cooling system—marine technicians recommend inspection annually or every 100 hours of operation. This impeller is specifically designed for 25-inch extra long shaft motors and works with Honda BF8, BF9.9, BF15, and BF20 series engines from 2001-2019 model years.