Find a replacement Oil Drain Plug and Valve for your 1999-2003 Ford 7.3L Powerstroke. Traditional style thread-in drain plugs can often become damaged, rounded, cracked, or stripped causing oil leaks. In many cases, the drain plugs should be replaced in standard intervals. Upgraded oil drain plugs are available for most applications and make it easy for you to quickly and cleanly drain your engine oil with just the turn of a lever. Fumoto, Mishimoto, Dorman, and EZ Oil Drain are just some the top brands you'll find.