Expensive car parts ART...
That's a nice piece, I did a couple of abstract pieces in the early 70's in my first few years with BMW (33 yrs total) wish I still had um.
I made some display pieces for the parts counter display case, I drilled and tapped a piston (off center to clear the wrist pin) and screwed in a spark plug from the bottom so the electrode stuck out the top, installed a plug wire and the con rod...sure made people scratch their heads.
Another one was just a TO bearing with a inline fuel filter in it with a tag that read "clutch filter".
Oh yah, how much dose it weigh?