The Caterpillar 14 3/8 Inch Outside Diameter Diesel Particulate Filters Gasket is a practical and reliable solution for your diesel engine needs. With a 14 3/8 inch outside diameter and 13 1/2 inch inside diameter, this coated shim stock steel gasket fits most Caterpillar diesel particulate filters. Sold individually, it is compatible with OEM and aftermarket numbers such as 278-5711, GSK-01-0541, ENV-G-CAT3-10, CT001, and more. This gasket is a must-have for anyone looking for a durable and efficient solution for their diesel engine.