The Genuine BMW Comprehensive Bushing Kit Rear (M3 Z4M) - 459403 is a kit of products designed specifically for cars with the M3 Z4M model. It includes a variety of bushings, which are small rubber or polyurethane components that are used to reduce friction and absorb shock in the suspension system of a car. The kit contains a total of eight bushings, each designed for a specific location in the rear suspension of the car. These bushings are essential for maintaining the stability and smoothness of the car's ride. The kit is comprehensive, meaning it includes all the necessary bushings for a complete rear suspension overhaul. It is a genuine BMW product, ensuring high quality and compatibility with the M3 Z4M model.