March Performance 1563 - Aluminum V-Belt Water Pump Pulley

March Performance 1563 - Aluminum V-Belt Water Pump Pulley are precision CNC-machined to run perfectly true. They are machined from 6061-T6 aluminum for extra strength and wear and feature a no-polishing, clear powdercoated finish. Choose from 1 or 2-groove water pump pulleys for your application. They are available in performance ratios for increased horsepower during normal street driving, and high water flow ratios for increased cooling during critical low-speed driving, to prevent overheating.