Water Pump Pulley 6.625in Dia 5/8in Pilot

The Water Pump Pulley 6.625in Dia 5/8in Pilot from ALLSTAR PERFORMANCE is a precision-engineered component designed for small block Chevy engines requiring reliable coolant circulation. This aluminum pulley serves as the driven component in your engine's serpentine belt system, transferring rotational energy from the crankshaft to the water pump to maintain optimal coolant flow and engine temperature regulation. Built for high-performance and street applications, this pulley is an essential replacement part for any small block Chevy platform where original equipment has worn or requires upgrading.

Manufactured from lightweight aluminum, the Water Pump Pulley 6.625in Dia 5/8in Pilot features a 6.625-inch outer diameter and a 5/8-inch pilot bore for precise fitment on short water pump applications. The two-groove V-belt design provides positive belt engagement while minimizing slippage under load, ensuring consistent power delivery to the water pump throughout engine operation. The natural aluminum finish resists corrosion while maintaining a clean, professional appearance under the hood. Its compact profile and balanced construction reduce vibration and extend belt life, making it an ideal choice for engine builders and enthusiasts seeking durability and performance.

This pulley is engineered specifically for small block Chevy engines equipped with short water pump configurations, making it compatible with a wide range of street and race builds. Installation is straightforward—the 5/8-inch pilot bore ensures secure mounting on your water pump shaft, while the two-groove design integrates seamlessly with standard serpentine belt systems. Weighing just 1.83 lbs, the aluminum construction contributes to reduced engine parasitic load while maintaining structural integrity under sustained RPM. Whether you're performing routine maintenance, upgrading worn components, or building a complete engine assembly, this ALLSTAR PERFORMANCE pulley delivers dependable performance and long-term reliability for sale at competitive prices.