Automotive belt tensioner pulleys can be defined as the devices used in automotive engines to maintain the proper tension of the belts that drive various engine components. These pulleys are essential in ensuring that the belts operate efficiently and do not slip or wear prematurely. The market encompasses the manufacturing, distribution, and sale of belt tensioner pulleys worldwide, catering to the needs of both original equipment manufacturers (OEMs) and aftermarket customers. OEMs are the major customers in this market as they require belt tensioner pulleys to be installed in new vehicles during production. The global automotive belt tensioner pulleys market includes various types of pulleys, such as automatic and manual tensioner pulleys, idler pulleys, and auxiliary tensioner pulleys. These pulleys are used in different automotive applications, including passenger cars, commercial vehicles, and off-road vehicles.