My car has been diagnosed with two bad front lower ball joints on the driver side. I have purchased two control arms, however I noticed they are painted black and a magnet sticks to them which means they are steel. The last time I was under my car I think the control arms were silver/not painted which made me think they were aluminum. Can some one verify the material of the original control arms. If the originals were aluminum I will get them from dealer/parts direct.

Thanks.