Wrench nut for quick and easy removalMeets or exceeds engine filtration requirementsHeavy duty construction with increased wall thickness for higher burst strengthOil flow rate 12-16 gallons per minute (depending on filter size)Metal leaf spring provides a positive seal between element and lidHeavy duty construction provides over 550 PSI hydrostatic burst strengthResin-impregnated filter media provides maximum filtering surface for contaminant removalAnti-drainback valve eliminates dry starts, prevents oil from draining back into crankcase during engine shutdownInternally lubricated gasketLeak-proof double roll seam