A bit of car

This is an alternator that my husband acquired, disovered it was non-functional, and left in the garden.
I thought it was quite pretty - the shape is reminiscent of a flower, and the rust adds some colour - and had been meaning to draw it for a while. I brought it in last night, put it on some crumpled sugar paper, and drew it from above.

EDITED on being told what bit of car it is.

Derwent Drawing and Chinagraph pencils on black paper.
01 October 2013