Looking under my truck, I saw a threaded hole in the bellhousing. I did a search and looked through the manuals and found out (I think) it is a water fording plug. My (maybe dumb) question is: does the plug belong installed at all times, and take it out to drain water after fording, or leave it out, then install it before fording? I would guess it stays in. Also, I saw in the search that it is a pipe plug (The bellhousing fordng plug is a pipe plug...square head. -brute4C, May 18th, 2007, 02:26 PM)-- does that mean it's just a regular hardware store NPT fitting?