Royal Purple oil fi lters provide superior particle removal, high performance and optimized flow characteristics for maximum performance and longer filter life. Filters feature 100% synthetic micro-glass media for superior particle removal with 99% filtration effi ciency at 25 microns. 100% synthetic micro-glass media for superior particle removal with 99% filtration efficiency at 25 microns. See the difference!Royal Purple's filter media, uses the latest technology filtration system which filters out particles as small as 25mc.a high-performance silicone anti-drain back valve that prevents dry starts, even in extreme conditions.An extra heavy duty rubber base gasket that ensures a leak-free seal.Ultra-strength filter housing endures higher burst strength than conventional filters.Pit Stop USA offers Royal Purple® Extended Life Oil Filter - Replaces Fram PH3429,PH3675,PH9837 20-59 at low everyday prices. Be sure to check out all of our products from Royal Purple including Royal Purple Extended Life Oil Filters.