Greetings! This Zimmermann brake rotor is a top-of-the-line replacement part for your BMW's front left brake system. With an outer diameter of 374mm and a height of 77mm, this brake rotor is designed for superior performance and durability. It is made of alloyed/high-carbon material and coated with a protective surface to ensure long-lasting quality.The hub bore measures 79mm and the bolt hole circle has a diameter of 120mm, with a 10/5 hole arrangement/number. It is a factory replacement product with Ece R90 approval. We have the other side available, part # 150.3474.70-BMW# 34212-282-806. We have been an automotive and truck parts distributor for over 30 years. We sell merchandise through several platforms at discounted prices as we sometimes get stuck with special orders and non-picked up items from customers. Our loss is your gain as we are selling these products to the online community at a very low price. We appreciate the business and happy browsing! These are close out items that are being sold. Please make sure part number(s) you are ordering is correct and contact us if you have any questions prior to ordering. All sales are final due to the discounted pricing. Thank you!