18-684M 60658 Water Pump for MerCruiser 4.3L 5.0L 5.7L Circulation With Gasket

Product Overview

This aftermarket replacement circulation water pump is intended for the listed MerCruiser 4.3L, 5.0L, and 5.7L marine engine applications and cross-references part numbers 18-684M and 60658. A circulation water pump moves coolant through the engine cooling system so the engine can maintain normal operating temperature. A gasket is supplied with the pump to help seal the mounting surface.

Key Features & Performance

• Circulation water pump that moves coolant through the engine cooling system
• Supports normal temperature regulation on the listed MerCruiser 4.3L, 5.0L, and 5.7L engine applications
• Cross-references part numbers 18-684M and 60658 for comparison with the existing component
• Supplied with a gasket for the pump mounting surface
• Used when servicing or replacing a worn or leaking circulation pump

Fitment & Compatibility

• for MerCruiser 4.3L applications
• for MerCruiser 5.0L applications
• for MerCruiser 5.7L applications

Common Uses

• Replacing a worn, leaking, or malfunctioning circulation water pump
• Servicing the marine engine cooling system during routine maintenance
• Restoring normal coolant circulation after the original pump has failed

Technical Specifications

• Product Type: Circulation water pump
• Part Number(s): 18-684M, 60658
• Engine Application(s): MerCruiser 4.3L, 5.0L, 5.7L
• Included Component(s): Gasket

Frequently Asked Questions

Q: What does a circulation water pump do? A: It moves coolant through the engine cooling system to help maintain normal operating temperature.

Q: How should fitment be verified? A: Compare the complete existing part number on the old pump and the full engine model designation against the numbers and applications listed here before purchase.

Closing Notice

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.