For Alpha One - Generation II S/N D494569 & Later. Sierra Impeller repair kits are made from high-quality rubber compounds, stainless steel, and composite plastics that withstand harsh marine environments. Our kits circulate water for optimal temperature regulation - preventing overheating and costly engine repairs. Engine-specific water pump repair kits meet or exceed OEM standards.

Kit Includes

• Seal Ring | 18-2944-9
• Gasket, Impeller | 18-2566-9
• Gasket, Impeller | 18-2565-9
• Impeller | 18-3056
• Impeller Key | 18-3293
• O-Ring | 18-7420-9
• Impeller Plate | 18-3122
• Impeller Gasket | 18-2564-2