Quality-Built Alternators are remanufactured for a perfect fit. Housings are 100 percent blasted clean, all mounting threads inspected, re-tapped for easy installation and consistent torque. Terminals are of 100 percent OE-quality. High-temp insulators make connections secure and reliable. Quality-Built alternators are re-designed to operate with every turn of the key for reliable performance. Rotors are electronically tested and coated with high dielectric insulation to ensure maximum durability and charging performance. Bearings are 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 load tested to ensure alternator durability and charging performance. Brushes and springs are new to ensure long life and charging performance. Quality-Built alternators are re-engineered to withstand the tough conditions of everyday driving. Pulleys are plated or powder coated for maximum corrosion protection. Slip rings are precision polished for maximum output. Voltage regulators are tested for correct operating voltage.