BMW Timing Chain Sprocket - Genuine BMW 11211742435

Product Information

An engine timing crankshaft gear is a precision-machined gear mounted on the crankshaft that drives the timing chain or belt to synchronize the crankshaft and camshaft rotation. This ensures the engine’s valves open and close at the correct time relative to piston movement, allowing efficient combustion and preventing internal damage. A properly functioning crankshaft gear is essential for smooth engine operation and long-term reliability.

• Rattling or knocking noises from the timing area, often due to worn or damaged gear teeth.
• Engine misfires or poor performance, caused by incorrect valve timing.
• Failure to start or severe engine damage, if the gear slips or breaks completely.

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.