OEM replacement voltage regulator with brushes. This part is at the back of the alternator and quite easy to replace. This is a part that fails quite frequently on K75 and K100 models. Over time, the brushes simply wear down. As the brushes wear, the spring tension decreases and the connection to the alternator armature diminishes. The end result is that you charging system will fail. Made in Germany.
Equivalent to the BMW part number 12 31 1 459 286 (12311459286)
K1100 LT up to 09/1992