It seals the connection between the turbocharger and the exhaust manifold/flange.
Compatible engines: Cummins L10, M11, ISM, and QSM.
Cummins also notes that this product is primarily intended for use with certain uncertified 14-liter N14 engines; exact compatibility should be verified with ESN/CPL.
Seal the engine plate or cover to prevent oil leaks.
Application for Cummins Engines: L10, M11, ISM and QSM.
Since this is a flat, lightweight gasket, you should verify its shape and holes by comparing it to the removed part or by checking the serial number/CPL.