1、Applicable Model: Arm bushing is replacement for LAND ROVER RANGE ROVER SPORT DISCOVERY 3 4, please confirm whether your model is applicable before buying. 2、OE Number: The part number for arm bushing arm for reference is RBX500531, please confirm whether it is consistent with the OE you need. 3、Function: The arm bushing acts as a buffer to reduce suspension and body vibration. It can not only improve the driving stability and safety performance of the vehicle, but also extend the service life of the vehicle. 4、Best Substitue: Premium replacement for old and damaged arm bushings protects vital components such as suspension system and steering knuckle from friction and loss. 5、Durable Replacement: Our arm bushing is manufactured in high strength material to ensure durability and stability, designed to meet or exceed OEM specifications to ensure shape and function match the original car.