The Diverter Box/Spring Plate Tube is a practical and versatile product designed to fit most makes and models. With a 4-inch O.D to 5-inch I.D, it offers a perfect fit for various applications. Please note that these parts are not approved for use on 2007 and later emission engines. Sold individually, this product ensures convenience and ease of use. Its reliable construction and compatibility make it an ideal choice for those seeking a reliable solution for their vehicle needs.