The John Deere AL157593 is a genuine OEM idler pulley designed for automatic tensioner systems, ensuring proper belt tension and efficient operation across a wide range of John Deere agricultural and construction equipment. This durable component is crucial for maintaining the longevity and performance of engine and accessory drive systems. It features an outer diameter of 100 mm, an inner diameter (bore) of 17 mm, and a width of 32 mm, with a weight of approximately 0.82 kg. The AL157593 is compatible with numerous John Deere tractors, combines, sprayers, and forage harvesters, providing reliable and consistent performance.