ACDelco PFL1A Professional Engine Oil Filter Equipped with 98% multi-pass filtering efficiency at 25-30 microns for excellent filtering capabilities Has a cellulose media that traps particles 1/3 the width of human hair to help ensure a clean supply of oil to engine components Has a thermosetting adhesive seal to hold filtering media in place for consistent, dependable filtration Equipped with superior filter capacity, enhanced efficiency, consistent flow management, and a high durability design to provide exceptional filtering performance Has a burst-strength five times greater than most engine oil operating pressures after the oil reaches operating temperatures (as long as the normal engine oil operating pressure is not greater than 51psi), for enhanced durability