These are always missing on these old trucks. This seal was intended to get maximum airflow through the radiator. Plus a new one cleans up that engine compartment.
Note: There were 2 versions on these; one version with (1) half circle cutout along the front edge and one version with (2) half circle cutouts. Ours, with the 2 circle cutouts will fit and replace either of the original versions
Material(s) .090 black masticated rubber (same as OEM)