Due to the design of the front suspension of the E46 M3, the control or caster arm bushings take a lot of abuse, and as a result, they have a relatively short service life. Fitted to the rear of the front control arms, these bushings are one of the most common suspension parts to wear out. Replacement bushings can help restore ride, handling, and braking performance. Pre-installed into a new bracket for easy installation. This replacement bushing comes from the original supplier to BMW, Lemforder and has been pre-pressed into new aluminium brackets for easy installation.