55MM Diameter Only applies to Bosch Alternator 0 120 485 048 - 80 Amp

Part number: BMW-12311432988 is a new, unused Genuine BMW alternator pulley. Most alternator pulleys often come grooved for the alternator drive belt to provide power to critical vehicle functions. An alternator pulley can also be reffered to as a decoupler pulley or clutch pulley.

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. Manufactured under the direction of BMW, expect excellent quality and a premium price since these parts are exclusively available through the BMW Dealership network. You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer and ensures its quality to you, including a 1 year warranty. In fact, many of these manufacturers have been making parts for BMW for decades and are experts in their own right. In our industry these manufacturers are called OEM (Original Equipment Manufacturers) or OES (Original Equipment Suppliers), and are often brands you recognize including Hella, Bosch, Bilstein and Lemforder. Don’t be surprised to open that Genuine BMW parts box and find a Bosch branded part inside. If you are looking to buy Genuine BMW Parts online then you’ve come to the right place. FCP Euro offers both types of product – Genuine BMW and OEM/OES - from brands we trust to use on our own cars. If you have any questions on what options are available to you, just give us a call, we are happy to help.

FCP Euro carries a wide range of precision-manufactured OEM (original equipment manufacturer) and aftermarket replacement parts for your vehicle. It's almost certain we will be able to satisfy your auto parts needs, no matter how complicated. If you need an uncommon part that isn't currently in stock, we will try to find it for you.

Unlike many other automotive retailers that have special rules and limited return policy, FCP Euro offers unlimited hassle free returns, free shipping on orders over $49, and a industry leading lifetime warranty on all parts that they sell.