Keep your zero-turn mower running smoothly with this 2-pack of 393312 V idler pulley drive assemblies. These replacement parts Compatible with Grasshopper mower 718, 720, 721D, 725, 725K, and 928D models. The assemblies serve as direct replacements for part numbers 165626, 532165626, 280-378 and 78-045, ensuring compatibility with your equipment. These pulleys are essential components that help maintain proper belt tension and smooth operation of your mower's drive system. Installing new idler pulleys can help restore optimal performance and prevent unnecessary wear on other drive components. Each pack includes two complete assemblies, giving you a spare or allowing you to service multiple mowers. Built to meet the demanding needs of outdoor power equipment, these replacement parts help keep your mower operating at peak efficiency