<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Hey Jacob! It sounds to me like the hole for a passenger side mirror. These would probably have threads inside of them. I may have an original plug if you want to replace it and not put a passenger mirror in. </div></body></html>