The Mack And Volvo D13 Diesel Oxidation Catalyst is a highly practical and efficient solution for Volvo and Mack D13 models. With a diameter of 14.173 inches and a height of 7.087 inches, this catalyst is made of durable silicon carbide substrate material and a stainless steel canister. The kit includes 1 Diesel Oxidation Catalyst, 2 gaskets, and 2 clamps, making it easy to install. Please note that this product is not CARB compliant and cannot be sold in California. With OEM and aftermarket numbers such as 28064129, 85001355, and C009-ID, this catalyst is a reliable choice for enhancing your vehicle's performance.