This Litens pulley is manufactured by the original equipment part supplier to ensure proper fit and performance. This pulley is produced for BMW serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. As with the original equipment part, this replacement part is made in Germany using the O.E. specified design and meets all performance and durability requirements. Litens is the world's largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.