The John Deere 144578 fan belt is a genuine OEM replacement part designed for a wide range of John Deere lawn tractors and ZTrak zero-turn mowers. This V-belt ensures proper engine cooling by driving the cooling fan, maintaining optimal operating temperatures and preventing overheating. Constructed for durability and reliable performance, it is an essential component for the efficient operation of your John Deere equipment. With a length of 2425.7 mm (95.5 inches) and a width of 12.7 mm (0.5 inches), this belt provides a precise fit and long service life.