The Motorcraft FL-400S is a high-performance, spin-on engine oil filter designed for Ford, Lincoln, and Mercury vehicles (OEM #E4FZ-6731-AB). It features a robust steel case with a silicone anti-drain back valve, a 3/4 - 16 thread size, and a cellulose-polyester blend media that filters down to 20-30 microns to enhance engine longevity.