Premium Starters and Alternators 81508 Alternator Systematic Re-Manufacturing process to ensure every unit is of the highest quality every time Weakness in Original Equipment design or components is Re-Engineered to be more durable, dependable, and long lasting Every Premium starter and alternator is tested before being packaged and shipped. Detailed test sheet included with every alternator. Premium creates custom technical bulletins to inform installer of known vehicle issues, manufacturer updates, and other possible reasons for charging system issues. These tech bulletins are included in the box.