The SM 2906 is a specialized 4-brush carbon set engineered for BEHR-type alternators. These alternators are commonly utilized in vehicles with European engineering roots, including the Tata Indica, Opel Astra/Corsa, and Renault/Mahindra Logan. This 4-brush (4 NOS) configuration is designed for high-efficiency current transfer, providing the stable voltage regulation required by the complex electrical systems and ECUs found in these specific vehicle platforms.