K&N Engineering, Inc. 56-1030 Custom 4-1/2 x 7 Inch Air Filter is a replacement air filter built to fit a 4-1/2-by-7-inch intake opening. The part number 56-1030 identifies this exact size within the K&N Custom line, making it suitable for air-filter replacements in compatible housings that require a 4-1/2" x 7" filter.
