The SM 8171 is a high-duty 12V voltage regulator specifically designed for the Chevrolet Optra (including the Optra Magnum and Optra SRV). Featuring a 2-Pin Delphi-Type (DEL.TYPE) configuration, this unit is built to manage the electrical requirements of the Optra’s 1.6L/1.8L Petrol and 2.0L TCDi Diesel engines, ensuring a consistent charge for the vehicle's premium electrical components.