This set of 4 Super Black Hole® Oil Filter magnets cleans your engine oil while it’s running. When oil is passing through the oil filter, the Black Holes pluck any ferrous metal particles right out of the oil stream which prevents premature wear of engine components like cylinder walls, cams, gears, etc. Installation literally takes seconds. Simply attach the magnets to the outside of your oil filter. Your oil filter must be the screw-on exposed type for these to work, see photos. Great for your car or truck oil filter as well!
THE BEST MAGNETS IN THE WORLD