[71Farmtruck]

Well, I was wrong on the diameter, they are both the same. The good other one is thicker, I'll bet its the dual diaphragm. It came off a suburban. I lined them up side by side and there was no noticeable difference in rod length in this instance. I tore it all down and removed the old one, I have the new one loosely on there, we'll see how it all runs when everything is tightened up.