These Volvo and Mack graphite exhaust gaskets are a practical and reliable solution for replacing worn-out or damaged gaskets in your vehicle's exhaust system. With a diameter of 14.3 inches, these gaskets are designed to directly replace OE clamps and gaskets, making installation quick and easy. Constructed from durable graphite, these gaskets are built to last and are compatible with most Mack and Volvo makes and models. With direct OE replacement numbers 21371339 and OTR82810, these gaskets offer a cost-effective and efficient solution for maintaining your vehicle's exhaust system.