For Alpha One, Generation II S/N D469859 & later. Sierra Impeller repair kits are made from high-quality rubber compounds, stainless steel, and composite plastics to 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. Interchangeable with 17275K05 / 817275A5.

Kit Includes

• Drain Screw Gasket | 18-2945-9
• Seal Ring | 18-2944-9
• Gasket, Impeller | 18-2566-9
• Impeller | 18-3056
• Impeller Key | 18-3293
• O-Ring | 18-7420-9
• Carrier Seal | 18-2354
• Face Seal and Tool | 18-2599
• Impeller Plate | 18-3122
• Impeller Gasket | 18-2564-2