FORD RACING HIGH PERFORMANCE OIL FILTERS Synthetic-Polymer/Cellulose-Fiber blend media Heavy gage base and canister for higher burst strength and impulse fatigue resistance High quality silicone anti-drain back valve Non-stick sealing gasket for ease of installation and removal Long life with standard and synthetic motor oils Up to 50% more filtering capacity then standard filters Improved filtering efficiency This technology is only available through Ford Racing Performance Parts. MOTORCRAFT PART NUMBER PERFORMANCE FILTER PART NUMBER FL1A CM-6731-FL1A FL820S CM-6731-FL820 FL784 CM-6731-FL784