Fits in stock Honda/Acura location or as a floating application on any vehicle Large hexes machined into top and bottom for easy disassembly Manufactured and assembled in the USA No additional parts required for installation (Honda/Acura Only) Thread sizes for filter are 12x1.25 top and 14x1.50 bottom for fittings (universal applications) Uses standard high flow replacement filter (NAPA Gold Part #PN4950 or FRAM part #CH6069)