Sturdy steel canister houses the finest filtering media and internal components availableCanister is slightly smaller in diameter than stock filters to make them easier to remove and installDesigned with a direct bypass valve that routes bypass oil directly to the filter exit, which minimizes the amount of contaminants carried to the engine in the unfiltered bypass oilThe nominal particle capture size is smaller than that of stock filters while the resistance to oil flow is nearly the sameIncludes drain plug O-ring with filterMade in the USA