The Bosch Alternator Brush Set - 11011 is a set of replacement brushes for a Bosch alternator. These brushes are designed to fit specific Bosch alternator models and are made of high-quality materials for durability and reliable performance. The set includes two brushes, one for the positive and one for the negative side, and is easy to install. These brushes are essential for maintaining the proper functioning of the alternator and ensuring a steady supply of power to the vehicle's electrical system.