Quality-Built Alternators are remanufactured for a perfect fit to your engine and are re-designed to operate with every turn of the key for relaiable performance. Housings are 100% blasted clean, all mounting threads are inspected and re-tapped for easy installation and consistent torque. Terminals are 100% OE-quality; high-temp insulators make connections secure and reliable. Rotors are electronically tested and coated with high dielectric insulation to ensure maximum durability and charging performance. Bearings are 100% inspected or new, with high-temperature grease for reduced heat and friction. Stators are electronically tested for maximum insulation quality and phase balance. Rectifiers are 100% load tested to ensure alternator durability and charging performance. Brushes & Springs are 100% new to ensure long life and charging performance. Pulleys are 100% plated or powder coated for maximum corrosion protection. Slip Rings are precision-polished for maximum output. Voltage Regulators are 100% tested for correct operating voltage.