POWERMASTER 57297 Powermaster 57297 Black GM Alt12SI 150A Smooth Look 1V Pulley

The Powermaster 57297 is a black smooth-look 1V pulley designed for GM Alt12SI 150-amp alternators. Its clean, streamlined appearance provides a practical replacement or upgrade option for applications requiring a single-groove pulley configuration. The pulley is designed to complement the alternator assembly while maintaining a professional appearance under the hood.

Built for compatibility with specified GM Alt12SI alternator applications, this pulley supports proper belt engagement when matched with the correct belt and charging-system components. The 1V groove profile is intended for systems using a single V-belt, making it important to confirm alternator, belt, and vehicle compatibility before installation. Use the Powermaster part number 57297 when comparing application requirements or ordering a replacement component.

The black finish and smooth exterior create a subtle look that works well in both restoration and performance-oriented engine compartments. This component is supplied as a pulley intended for installation with the appropriate alternator hardware and should be installed according to the vehicle or alternator manufacturer’s recommended procedures. Always verify pulley alignment, belt tension, and rotation clearance after installation to support reliable operation. The Powermaster 57297 is not identified as air-restricted or truck-freight-only, offering a convenient option for eligible GM Alt12SI 150-amp alternator applications.

Features:

• Brand: Powermaster

• Part Number: 57297

• Application: Designed for GM Alt12SI 150-amp alternators

• Pulley Style: Smooth-look design for a clean engine-compartment appearance

• Belt Configuration: Single-groove 1V pulley profile

• Finish: Black finish for a discreet, professional appearance

• Installation: Verify alternator compatibility, belt alignment, and required hardware before installation