This exhaust gas recirculation valve gasket fit is designed for Cummins ISX X15 QSX models. The gasket is specifically designed to fit snugly in the exhaust system without any leaks, ensuring optimal combustion and fuel efficiency. The OE/OEM part number for this gasket is 3683537, and the manufacturer part number is also the same. It is compatible with a variety of exhaust systems and is easy to install, making it a convenient upgrade for any vehicle or truck. Whether you're looking to replace a worn-out gasket or simply want to upgrade your exhaust system, this product is a reliable choice.