No voids or other casting defects in the material to cause leaks. Position of the filter has been shifted slightly to give additional clearance between the filter body and the crankcase for easier filter installation and removal. Made in the USA. Machined 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..
