FIT:Universal.(Fit for 5-1/8 carb neck.) FUNCTION:Allow air in through the top as well as through the sides, increasing the overall airflow versus a closed stop assembly. ADVANTAGES:High flow air increase fuel efficiency and improve acceleration. SIZE:It is oval in shape and measures 11.5 long, 8 wide, and 3.25 tall, with 5-1/8 neck and 2 tall element. SUPPORT:At PTNHZ, if you have any question about our product, please contact us right away, we can handle any problems. ASIN B0G2XRD245 Fit Type Universal Fit Brand Name PTNHZ Unit Count 1.0 Count Manufacturer PTNHZ Model Number AIT78 Product Grade Performance Part Automotive Fit Type Universal Fit Included Components Air Filter Manufacturer Part Number AIT18 Item Dimensions L x W x H 14.5 L x 8.3 W x 2.7 H OEM Equivalent Part Number AIT18 Manufacturer Warranty Description 1 year