Water Pump Pulley - GM LS

The Edelbrock Water Pump Pulley for GM LS-series engines is a precision-engineered serpentine pulley designed to optimize coolant circulation and accessory drive efficiency. This smooth-faced aluminum pulley measures 5.72 inches in diameter and features a black anodized finish that resists corrosion while maintaining a clean engine bay appearance. Built to OEM specifications, it ensures proper belt tension and accessory synchronization across the entire LS engine platform.

The pulley's smooth serpentine design reduces friction and heat generation compared to ribbed alternatives, translating to improved cooling system efficiency and reduced parasitic drag on the engine. Constructed from lightweight aluminum, it maintains structural integrity under high RPM operation while contributing minimal rotational mass to the accessory belt system. The black anodized coating provides UV resistance and extended longevity in demanding engine bay environments, particularly in high-heat or marine applications where corrosion resistance matters.

This pulley serves as a critical component for LS engine builders and restorers who require OEM-specification water pump drive compatibility. Whether upgrading a stock cooling system, rebuilding an engine, or standardizing accessory drives on a customs build, the Edelbrock pulley ensures reliable coolant flow without modification to existing brackets or tensioners. Its direct fitment on LS-series water pumps makes it the go-to choice for technicians prioritizing bolt-on reliability over aftermarket experimentation.