This A-Premium Alternator Regulator is designed to ensure optimal performance for your vehicle's electrical system. It is compatible with Hyundai Sonata models from 2003 to 2005 and Kia Optima models from 2005 to 2006. Key features include precise voltage regulation, durable construction, and easy installation. Technical specifications: 14.5V, fits Hyundai Sonata 2003-2005, fits Kia Optima 2005-2006.