Radiator cap

[0001]FIG. 1 is a front perspective view of a radiator cap;

[0002]FIG. 2 is a rear perspective view thereof;

[0003]FIG. 3 is a side view thereof;

[0004]FIG. 4 is another side view thereof;

[0005]FIG. 5 is a top view thereof; and,

[0006]FIG. 6 is a bottom view thereof.

[0007]The broken lines illustrate portions of the radiator cap that form no part of the claimed design.