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

Sea Water Pump for Mercruiser, OMC, and Volvo Penta

This sea water pump replaces OEM numbers 8M0113734 and 8503991 for Mercruiser, OMC, and Volvo Penta stern drive engines, delivering reliable raw water circulation for 4.3L and 5.0L marine engines.

Overview

This sea water pump delivers raw water cooling for Mercruiser, OMC, and Volvo Penta sterndrive engines. The sea water pump fits 4.3L and 5.0L models and is a direct replacement for worn or leaking original pumps. It is built for boat owners and marine mechanics who need a dependable cooling solution.

Built For Performance

• Marine-grade bronze body resists corrosion in saltwater and freshwater
• Heavy-duty stainless steel shaft provides long service life
• High-flow bidirectional impeller ensures steady water flow at all rpm
• Precision-machined seating faces prevent internal leaks
• Includes mounting gasket for a complete installation

Fits These Machines

• for Mercruiser 4.3L stern drives
• for Mercruiser 5.0L stern drives
• for OMC 4.3L sterndrive models
• for OMC 5.0L sterndrive models
• for Volvo Penta 4.3L and 5.0L applications

On-The-Job Use

• Raw water circulation pump for marine engine cooling systems
• Rebuilding or servicing Mercruiser and OMC stern drives
• Replacing a leaking or worn factory sea water pump
• Maintaining reliable water flow in saltwater fishing boats
• Keeping stern drive engines cool under heavy cruising loads

Specs At A Glance

Good To Know

Q: Does this pump include gaskets? A: Yes, the pump typically includes mounting gaskets and O-rings for a complete installation.

Q: Can this pump be used in saltwater? A: Yes, the marine-grade bronze construction resists saltwater corrosion for dependable service in saltwater environments.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.