New Product. CNC machined billet aluminum block off plug for the neutral safety switch threaded hole in the transmission case. These will fit almost every Dodge, Plymouth, Chrysler, AMC Torqueflite transmission from 1962-newer. It fits the 727, 904, 998, 999, 500, 518, 618, 42RH, 42RE, 46RH, 46RE, 47RH, and 47RE. I made these because of the widespread problem of aftermarket neutral safety switches leaking fluid right through the switch. This plug will solve that problem, but you will need to have an aftermarket shifter that has provisions to function as the neutral safety switch. Included with the plug is a new gasket. These are made in the USA. If you have questions or to place an order, email me mrrandyj@aol.com $24 plus shipping. Thanks for looking!