The magnetic drain plug in the Mini sump is a good and wonderful thing, but located at one end of the sump it doesn't trap all the junk. We have taken the concept one step further! Mini Mania has developed a magnetic plug that projects into the oil inlet circuit just before the pump. An adapter replaces the existing plate on the back of the tranny and the magnetic plug screws into that. To assure that the pick-up pipe is not dislocated, it is recommended that the adapter be installed before the transmission is mounted to the engine. After installation the plug can be cleaned whenever you drain the oil; you will be amazed at some of the particles that will work through the pick-up screen heading for the pump.