Moog K3131 Control Arm Bushing Kit Bushings are manufactured from high quality elastomer compounds for durability and ride performance. Elastomer compounds do not utilize any reground rubber fillers. High level bonding adhesive is used for durability. Bushings are assembled with the proper precompression to provide the ultimatein performance and feel. Two kits needed to complete installation Original equipment quality to replace worn-out bushings Bushing is made of rubber