Quicksilver 8M0139997 Seawater Pump Kit with Air Fittings

The Quicksilver 8M0139997 is a genuine OEM seawater pump kit designed specifically for MerCruiser high-performance marine engines. This raw water circulation pump is a critical cooling system component that draws seawater through the engine to maintain optimal operating temperatures in inboard and sterndrive applications.

Key Features:

• Genuine Mercury Marine OEM part - factory original equipment quality
• Equipped with integrated air fittings for cooling system air purging
• Updated design with red hub "shorty" impeller and overmolded inner wear plate
• Serpentine belt driven with side-mount configuration
• Includes all necessary gaskets and seals for complete installation
• Air fitting valves available in 90-degree or straight orientation configurations
• Pulley not included - sold separately

Engine Compatibility:

• MerCruiser 8.1L (496 cubic inch) GM Magnum engines
• 496 MAG, MAG HO, and MAG MIE models
• Also compatible with 4.3L, 5.0L, 5.7L, 6.2L, and 8.2L MPI engines
• MerCruiser Racing 377, 520, and 540 engine models with ECM 555

Cross-Reference Part Numbers:

This pump supersedes and replaces Mercury part numbers 8M0137217, 8M0137218, 8M0139996, 46-8M0122658, 46-862914T05, 46-862914T12, and 46-8M0118069. When ordering replacement pulleys, consider Mercury part numbers 8M0150724 or 8M0220214 depending on your specific engine application.

This complete seawater pump kit ensures reliable engine cooling performance and is backed by Mercury Marine's quality standards. Professional installation is recommended to ensure proper sealing and correct belt tension.