Sierra 18-1730 Marine Water Pump Coupling

The Sierra 18-1730 is a high-quality replacement marine water pump coupling designed for Mercury Marine, MerCruiser sterndrive, and Chrysler/Force outboard engines. This critical cooling system component ensures proper water flow through your engine's cooling system to prevent overheating and maintain optimal performance.

Key Features:

• Direct replacement for Mercury Marine OEM part number 43585
• Manufactured to meet or exceed OEM specifications
• Universal fit design for multiple marine engine applications
• Durable construction engineered to withstand harsh marine environments
• White polymer material resistant to corrosion and saltwater

Applications: Compatible with Chrysler/Force/US Marine 75HP, 90HP, and 120HP Force engines (1995-1999), MerCruiser Sterndrive models (serial number 0W755000 and up, 0W995000 and up from 1998), and various Mercury Marine outboard motors. This coupling is commonly included in upper water pump repair kits and is essential for maintaining your marine engine's cooling system integrity.

Sierra International provides premium aftermarket marine parts with over 50 years of industry experience, ensuring reliable performance and long service life in demanding marine conditions.