No voids or other casting defects in the material to cause leaksPosition of the filter has been shifted slightly to give additional clearance between the filter body and the crankcase for easier filter installation and removalMade in the USAMachined to make it easy to install an oil cooler in the pressure-side of the system if a cooler is not needed, simply install the pipe plugs in the threaded holes in the filter bracket, instead of the hose fittings.