Troy-Bilt Mustang 42 Zero-Turn Mower Deck Spindle Assembly Gator Blades Kit Upgrade your Troy-Bilt Mustang 42 Zero-Turn Mower with this high-quality deck spindle and Gator style blades kit. Designed to replace worn-out components, this kit ensures a clean, precise cut while extending the life of your mower. Compatible Model: 17AMCACS066 ? Mustang 42 (2018) Kit Includes: (2) 21-3/16" Gator Blades ? 6-point star center hole Replaces Troy-Bilt part numbers: 942-04308, 942-04308A, 942-04312, 942-04312A (2) Spindle Assemblies with Hardware Replaces Troy-Bilt part numbers: 918-04822, 918-04822A, 918-04822B Note: Verify your model number before purchasing to ensure compatibility. If unsure, check your owner's manual or the model sticker under the seat. *Spindle top nuts must be torqued to 70-90ft lbs. DO NOT torque by holding the pulley, this will damage the pulley. Instead, use a piece of wood to block the blade*