The Mercruiser 454 Circulating Water Pump is a marine-grade pump designed for efficient coolant circulation in 454 engine models. It ensures optimal engine cooling by maintaining consistent water flow through the system. Built for durability, it withstands harsh marine environments and saltwater conditions.

The Mercruiser 454 Circulating Water Pump is designed for marine applications with the following key specifications:

Size: Typically 4.5 inches in diameter (housing size may vary slightly by model).

Grade: Marine-grade construction for corrosion resistance.

Viscosity: Compatible with standard marine engine coolants (typically ethylene or propylene glycol-based).

Buoyancy: Not applicable (non-buoyant, as it is a mechanical pump).

Material: Cast iron or aluminum housing, stainless steel or composite impeller, and corrosion-resistant seals.

Flow Rate: Approximately 50-60 GPM (gallons per minute) at standard operating RPM.

Mounting: Bolt-on design compatible with Mercruiser 454 engines.

Seal Type: Mechanical seal or lip seal, depending on model.

Operating Temperature: -40°F to 250°F (-40°C to 121°C).

Weight: Approximately 5-7 lbs (varies by material composition).