This engine valve cover breather has a 3 inch overall diameter and is 2.50 inches tall. It includes a raised Chevrolet Bowtie logo emblem on the top side. This is a twist-on style valve cover breather which fits a 1.220 inch oil filler hole. Made from high-quality steel material. Officially Licensed Chevrolet Performance Product. Backed by a limited 30 day factory warranty. Sold Individually.