The Mercruiser MC 1 Water Pump is a marine pump designed for efficient water circulation in Mercruiser engines. It ensures proper cooling by drawing water from the surrounding environment and directing it through the engine system. This durable pump is essential for maintaining optimal engine performance and preventing overheating.

The Mercruiser MC 1 Water Pump is designed for marine applications with the following key specifications:

Size: Typically fits Mercruiser MC-1, R, MR, and Alpha One stern drives.

Grade: OEM replacement part for marine engines.

Viscosity: Compatible with standard marine engine coolant/antifreeze mixtures (typically 50/50 water-ethylene glycol).

Buoyancy: Not applicable (non-floating component).

Material: Housing made of corrosion-resistant aluminum or composite; impeller constructed from neoprene or nitrile rubber.

Flow Rate: Varies by engine model but typically supports cooling needs for Mercruiser V6 and V8 engines.

Mounting: Bolt-on design with gasket or O-ring seal for proper installation.

Impeller Type: Flexible rubber vanes for efficient water circulation.

Compatibility: Works with Mercruiser stern drives from the 1970s to early 1980s (MC-1 models).