This Litens Idler Pulley is manufactured by the original equipment (O.E.) part supplier to ensure proper form, fit, and performance. All O.E. pulley hardware is included to reduce install time. Part designed for Mercedes-Benz applications. Like the OE part, this part is of made of Thermoplastic material and manufactured in Europe. 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.