Abstract: A radiator cover has an inner cover, a middle cover and an outer cover. The inner cover has a circular plate with a threaded post, a toothed disk with teeth on the top surface, two gaskets, a serpentine plug, a bolt and a circular washer. The middle cover has a bottom inward flange, two inserted holes on the top surface, a square post, a spring passed by the square post, and a toothed plate with a square hole inserted by the square post. The toothed plate has serrations at the bottom surface of the toothed plate, a cylinder on the top of the toothed plate, and a square hole at the center of the cylinder. The cylinder inserts in the spring. The serrations engage with the teeth. The outer cover has a circular wall and two pins extending downward from the top portion of the outer cover. The pins insert tightly into the corresponding inserted holes, respectively.