Abstract: An insulating isolator assembly for a heat shield including an isolator guide with wire mesh isolator located thereon and a mounting insert wherein the mounting insert has a set of tabs that aid in attaching the mounting insert to the heat shield and the isolator guide in inserted through an aperture of the mounting insert. The isolator guide having a tube having a first end with a first retaining feature thereon and a second end with a second retaining feature thereon which retains the wire mesh isolator on the isolator guide. When the isolator guide extends through the aperture of the mounting insert, the first retaining feature and isolator remain on one side of the mounting insert, while the tube and the second retaining feature of the isolator guide extend through the other side of the mounting insert.