3 inch wide Header caps that wont mess up or scratch your headers! This is for one cap only, if you need a pair please order two! These caps are meant for headers with short tips, they go over the collector. These are a precision fit, so please measure the tip of your header before ordering. If a custom size is neeeded please shoot us a email or message and we will get you sorted. Specs are 3.25 inch opening and 5.5 inchs tall.