Genuine Ingersoll-Rand Industrial Air Compressor Complete Air Head Part# 3704586 Kit contains the Air Head Upper, Air Head Bottom and gasket New part, but main box is very rough and dirty - inner boxes are in better shape. The upper half does have some slight surface rust as seen in picture. It's not pitted or a problem. Policies and FAQ's Check out my other items! Be sure to add me to your favorites list!