Interested in simple, effective, affordable engine protection? This ECS magnetic drain plug attracts and holds small ferrous metal particles that escape your oil filter, and holds on to them to prevent engine damage. Just wipe away the particles from the magnetic drain plug tip at each oil change to remove abrasive particles that would otherwise scar close-tolerance engine parts and polished surfaces. The N42 Neodymium magnet used is 18 times stronger than the OEM version, and has a high resistance to demagnetization. Note: New engines commonly generate a higher number of particles, making ECS magnetic plugs great for rebuilt or refreshed engines.