The SM 2012 is a high-quality Alternator Rotor (Armature Assembly) specifically designed for the Mando-style alternators utilized in the Chevrolet Spark. Engineered to O.E. (Original Equipment) Specifications, this component is optimized for the Spark's 1.0L S-TEC engine electrical system, featuring the specific 2-PIN regulator interface required for proper communication with the vehicle's electrical control unit.