BMW Distributor Rotor - Genuine BMW 12111312157

Product Information

A distributor rotor is located inside the distributor cap and is responsible for directing high-voltage electrical current from the ignition coil to the correct ignition wire leading to each spark plug. The rotor spins in sync with the engine’s camshaft and ensures that the spark is delivered at the right time to ignite the air-fuel mixture in each cylinder.

• Engine Misfires: A faulty distributor rotor can cause misfires, leading to rough idling and a loss of power during acceleration. This occurs because the rotor may not properly direct the spark to the appropriate cylinder
• Hard Start: If the rotor is damaged or worn, it may prevent the engine from starting or cause extended cranking before the engine fires
• Rough Idle: A failing rotor can cause the engine to idle unevenly or roughly, which may be accompanied by vibrations or shaking

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

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. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.