Sierra 18-3237 Water Pump Impeller Repair Kit for Mercruiser Stern Drive

The Sierra 18-3237 is a complete water pump impeller repair kit designed for Mercruiser stern drive engines. This kit provides all the essential components needed to rebuild your engine's raw water cooling pump, ensuring optimal cooling system performance and preventing overheating damage.

Key Features:

• Direct replacement for Mercruiser part number 47-59362T6
• Complete repair kit includes impeller, gaskets, O-rings, and seals
• Precision-engineered components meet or exceed OEM specifications
• Designed for inboard Mercruiser stern drive applications
• High-quality materials ensure reliable water flow and cooling efficiency

Sierra Marine is a trusted name in marine engine parts, providing professional-grade replacement components for reliable performance. Regular impeller replacement is critical preventive maintenance—impellers should be inspected annually and replaced every 2-3 years or at the first sign of wear to prevent costly engine damage from overheating.