SuperTech oil filters are made by Champion Labs, NOT AC. Champion Labs is also a supplier to GM for AC oil filters. (GM's no longer in the filter-making business.) K&N oil filters are also produced by Champion Labs. So are American Bosch oil filters. So are Mobil 1 oil filters. Just wanted you to know, PRINCESS KIDAGAKASH, so you don't inadvertently end up with an advanced e-core design filter.