Allstar Transmission Tail Shaft Seal and Bushing Kit features a transmission tail shaft seal and bushing kit. It fits GM power glides, GM th350, Saginaw, Muncie, bert and brinn transmissions. The tail shaft bushing is a regular wear item, located inside the transmission tail shaft housing. It should be replaced when replacing a tail shaft seal or when a driveshaft failure has occurred. A worn bushing will cause excessive side-to-side movement of the slip yoke and create a vibration or leak. A replacement individual seal can be purchased separately by purchasing Allstar part 72150. It is sold separately. It is backed by a 90-day limited factory . It is sold as one complete kit.