C5 Corvette LS1 LS6 Magnetic Oil Drain Plug NEO Magnet Fits: All 97 thru 04: Designed to Fit All C5 97 through 04 Corvettes. Uses Neodymium (NEO) Magnet: Which is the Strongest Permanent Magnet Made. 5X Stronger then GM's Magnetic Drain Plug. Cheap added Engine Protection. Drain Plug size: Pilot Point M12-1.75, Head Size 15mm. Sure you may not need the magnetic pull to latch onto a 1 1/2" wrench weighing well over 2lbs and 18.5" long in your Corvette engine but the magnetic strength of the Super Neodymium (NEO) magnet on our drain plug could do the job if needed. The fact is we all know that it is a good idea to run a magnetic drain plug not only for the engine protection that it offers but also as an early indicator of engine wear issues. If you are going to run a magnetic drain plug why would you not want the strongest one offered? Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world. Our Oil Drain Magnet Plug with the SUPER NEO Magnet attracts even the tiniest particles that will cause wear bearing damage over time. Before these particles can affect the rest of your engine, they are stuck to the drain plug. During each oil change, simply inspect your magnetic drain plug to ensure your engine is not showing excess wear, clean and reinstall. Our magnetic drain plugs are 5X More Powerful than the GM magnetic drain plug found on only a handful of vehicles. For a cost savings measure, most GM vehicles do not even have a magnetic oil drain plug installed from the factory and it is only offered as an after market option. These high end magnetic drain plugs include the flange head with built in rubber o-ring for repeated oil changes for years to come. Drain Plug size: Pilot Point M12-1.75, Head Size 15mm.