8M0113734 8503991 Sea Water Pump for Mercruiser OMC Stern Drive Penta 4.3L 5.0L

Product Overview

This sea water pump is designed to circulate cooling water through marine engines, preventing overheating and ensuring reliable operation. Ideal for boat owners and mechanics maintaining Mercruiser, OMC, or Volvo Penta sterndrive systems, this pump delivers consistent flow for 4.3L and 5.0L engines. The sea water pump directly replaces worn OEM units to restore proper cooling performance.

Key Features & Performance

• Direct replacement for Mercruiser, OMC, and Volvo Penta sea water pumps
• Compatible with 4.3L and 5.0L gasoline stern drive engines
• Matches OEM part numbers 8M0113734 and 8503991 for exact fit
• Constructed with corrosion-resistant materials for marine environments
• Includes gasket or sealing components for easy installation (where applicable)

Fitment & Compatibility

• Mercruiser stern drive models with 4.3L and 5.0L engines
• OMC stern drive models with 4.3L and 5.0L engines
• Volvo Penta stern drive models with 4.3L and 5.0L engines

Common Uses

• Replacing a failed water pump on a boat with engine overheating
• Preventive maintenance during winterization or engine rebuild
• Upgrading from an older or corroded pump assembly

Technical Specifications

• Part Number(s): 8M0113734, 8503991
• Type: Sea Water Pump
• Application: Marine Stern Drive Cooling System

Frequently Asked Questions

Q: Will this pump fit my 1995 Mercruiser 5.0L? A: Yes, it is compatible with Mercruiser 4.3L and 5.0L sterndrive engines; verify your model series for exact fitment.

Q: Does this pump include a gasket? A: Most units include a gasket or O-ring but check the listing description for included components.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.