Product Features:METAL SHELL will withstand a minimum of 200 PSI burst pressureTREATED FILTER ELEMENT is made of cellulose and synthetic fibers bound together with a phenolic resinTHE CENTER SUPPORT TUBE supports the paper element to withstand the high pressure levels of engine start-upsTHE RELIEF VALVE ASSEMBLY prevents a plugged filter from starving the engine of oilTHE ANTI-DRAINBACK VALVE prevents oil from draining out of the filter when the engine is not running