Pulley 8-Groove Yellow Zinc 58mm OD

The Pulley 8-Groove Yellow Zinc 58mm OD from POWERMASTER is a serpentine alternator pulley engineered for vehicles requiring reliable belt-drive power transmission. This 8-rib alternator pulley features a 58mm outer diameter and zinc oxide coating designed to withstand engine bay corrosion and thermal cycling. Built from steel construction, this POWERMASTER alternator pulley delivers the mechanical precision needed for consistent serpentine belt engagement and smooth alternator operation across thousands of miles.

The 8-groove configuration ensures optimal belt contact and torque transmission to the alternator rotor, minimizing slip and maximizing electrical generation efficiency. Yellow zinc plating provides superior corrosion resistance compared to standard zinc finishes, especially critical in high-humidity environments, salt-air exposure, or vehicles subject to frequent washing. The 58mm diameter specification is compatible with specific engine block configurations and alternator mounting systems, making proper fitment verification essential before installation. This is a single pulley unit (each) suitable for replacement or repair applications.

This serpentine pulley is designed for engine builders, restoration shops, and technicians performing alternator service or engine rebuilds. POWERMASTER alternator pulleys are factory-direct components used in original equipment and performance applications. The steel-with-zinc construction balances durability with cost-efficiency, making it suitable for street vehicles, off-road equipment, and marine applications where reliable charging system operation is essential.

Proper pulley alignment and belt tension are critical after installation—misalignment can cause premature belt wear and alternator bearing stress. This pulley is sold individually and requires correct fitment to your specific engine and alternator configuration.