131725 Exhaust Manifold Gaskets for Cummins ISB Replaces 3955339

It’s an exhaust manifold gasket set designed to seal the exhaust manifold to the cylinder head on a Cummins ISB engine. A tight seal helps prevent exhaust leaks that can cause noise, soot buildup, and reduced efficiency. It’s commonly used during exhaust manifold service or when replacing worn or leaking gaskets.

Yes, it replaces 3955339 for the specified Cummins ISB exhaust manifold gasket application. Confirm fitment by matching your engine build information and the original gasket style before installation. Using the correct replacement helps ensure proper sealing and long gasket life.

If the leak is coming from a failed manifold-to-head seal, Cummins ISB exhaust manifold gaskets like this PAI replacement gasket can resolve it when installed correctly. Inspect the manifold for warping or cracks and check mounting hardware, since those issues can cause repeat leaks. Clean mating surfaces and follow proper torque procedures to avoid future blowouts.