The MTD 918-04474B Pulley Spindle Assembly helps support proper blade rotation and power transfer on compatible MTD lawn mower applications. This assembly works with the mower deck and belt system to rotate the cutting blade during operation. It is a practical replacement for a worn, damaged, or faulty spindle assembly that may cause blade vibration, noise, or uneven cutting performan... https://www.wholetoolbox.com/mtd-918-04474b-pulley-spindle-assembly/918-04474B.html