The Corteco Subframe Bushing Kit - 135621 is a comprehensive set of products designed for a car's subframe bushing replacement. It includes various components such as bushings, bolts, and washers that are necessary for the proper installation and functioning of the subframe bushings. The kit also contains specialized tools and equipment, such as a bushing press, to aid in the installation process. The specific contents of the kit may vary, but typically it will include all the necessary components for a complete subframe bushing replacement. This kit is suitable for various car models and can be used for both front and rear subframe bushing replacements.