Dimple Magnetic Differential Drain Plug

Gear oil works best when it is uncontaminated. Continuous friction in your differential creates tiny metal particles that contaminate the oil. These particles are measured in microns (one millionth of a meter: 25 microns = .001"). Even after an oil change, there are still contaminants left in the differential. Over time, these metal particles are circulated millions of times, polishing (wearing) down the metal components inside your differential, shortening the differential's life until it wears out. Magnetic drain plugs remove the metal particles, extending your differential's useful life. It is also less likely that you will experience oil oxidation, as the metal particles that contribute to the process of oxidation adhere to the magnet.

Dimple™ makes some of the finest magnetic drain plugs on the market. What makes Dimple™ plugs different from other magnetic drain plugs? The magnets. All magnets are not created equal -- Dimple's "Black Hole™" high-temperature magnets are the strongest, high-temperature, neodymium magnets in the world. Regular magnets lose magnetism at 175° F; Dimple's neodymium magnets are rated at over 300° F, so they continue to grab those destructive metal particles even when things get hot. In addition, Dimple's magnets degrade at the incredibly slow rate of ½ of 1% every 100 years, so they are guaranteed to work throughout your lifetime. 

Custom made for BMW vehicles, featuring a large 8 mm neodymium magnet rated at 300° F.

M22 x 1.5

Replaces Genuine BMW Part # 33117525064