These high quality die-cast aluminum spin-on adapters boasts a billet look at a reasonable price. With -10AN (7/8 inch-14) O-ring ports and a 20 x 1.5mm thread size this Premium Series adapter fits 2 1/2 inch to 2 3/4 inch engine filter landings. It provides external oil lines to allow the addition of an engine oil cooler and/or remote filter mount, installing at the stock engine oil filter location. Also features a durable black powder coat finish.