This International and Navistar 4 1/2 Inch Outside Diameter Diesel Particulate Filter Gasket is a must-have for diesel engine owners. Made with graphite-infused paper construction material, this gasket is durable and long-lasting. It fits most International and Navistar diesel particulate filters and is sold individually. With a 4 1/2 inch outside diameter and 3 7/8 inch inside diameter, this gasket is practical and easy to install. It is compatible with OEM and aftermarket numbers 3846392C1 and G17003. Keep your diesel engine running smoothly with this reliable and high-quality gasket.