I moved my car and noticed this thing where it was parked. I'm not sure what it is but think there's quite a high probability that it came from my car. Since this has happened I've noticed that there's a knocking noise if I hit a bump a bit too hard that I don't think was there before. I've looked at some diagrams for the suspension but couldn't see anything that matches. Does anyone know what it is? There's an open ended cylinder that has a threaded thing coming out of it. The closed end has a small hole where something has sheared off and there would be a wire coming through. The other end of that wire is tied into a ball on the inside of the cylinder. The car is standard UK spec.