Replacement part number: 532420019 583405601 420019 Compatible with Craftsman model: 91725450, 9174787A,944364741, 917370691, 917370690, 917370693, 917370692, 917379700, 917370850, 917379701, 917376390, 917374091, 917374090, 917374095, 917376395, 917374094, 917374093, 917374092, 917376391, 917376392, 917376393, 917376394, 917370680, 917374367, 917374366, 917370440, 917374365, 917370681, 917374364, 917370442, 917375453, 917376542, 917370441, 917376543, 917370444, 917374369, 917376544, 917370443, 917374368, 917376545, 917370446, 917370600 Durable Construction: Made of sturdy plastic designed to last with a steel reinforced door that withstands years of mowing Plug-and-Play Replacement: Direct replacement requires no additional tools or modifications, simply plugs into place like the factory installed component Please check the model carefully before purchase to avoid buying the wrong one, if you have any questions, please contact us and we will reply you within 24 hours This mulching door kit is for Husqvarna 22" lawn mowers as a replacement for part numbers 583405601 and 420019. By finely shredding grass clippings and recycling them as nutrients back into your lawn, this kit helps reduce yard waste while maintaining a healthy, green grass. The durable construction ensures long-lasting performance season after season. Installation is quick and easy with no tools required - simply remove the standard door and snap this mulching door into place. Whether you want to mulch fallen leaves in the fall or grass clippings throughout the growing months, this affordable kit transforms your mower into a versatile yard workhorse