FIG. 1 is a perspective illustration, from the front and left side, of elements of a bottom pan for a snowmobile according to our design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

In FIGS. 1-5, broken lines showing structure are for illustrative purposes only and form no part of the claimed design.