Sb Alum Water Pump

The SB Alum Water Pump from Moroso is a premium aluminum cooling system component engineered for serious engine builders and performance enthusiasts who demand reliability and weight savings. This water pump is designed to replace factory cast-iron units on small-block applications, delivering improved thermal efficiency while reducing rotating mass—a critical upgrade for both street and competition builds. Whether you're restoring a classic muscle car or optimizing a modern performance engine, this pump provides the durability and flow characteristics necessary for sustained high-RPM operation without compromising longevity.

Constructed from lightweight aluminum alloy, the SB Alum Water Pump offers a significant weight reduction compared to traditional cast-iron alternatives—an advantage that translates to lower parasitic drag on your engine and improved overall balance. The pump's design maximizes coolant flow rates while maintaining pressure integrity across the entire cooling system, ensuring consistent operating temperatures even under sustained high-load conditions. Moroso's engineering focuses on precise impeller geometry and bearing clearances that minimize turbulence and cavitation, resulting in efficient heat transfer and extended pump life in both street and race environments.

This water pump is ideal for small-block engine swaps, restorations, and performance builds where weight reduction and cooling system optimization matter. The compact design (9.5 x 6.5 x 13 inches) facilitates installation in tight engine bays while maintaining standard belt-drive compatibility with factory serpentine or traditional V-belt configurations. Installation requires basic mechanical knowledge and standard hand tools; compatibility with your specific engine depends on the small-block platform you're building—verify fitment before purchase to ensure proper mounting boss alignment and pulley positioning.