Mahle piston rings for Cummins B 5.9L (STD) diesel applications, supplied per one cylinder and specified for a 4.015" bore. These standard-size rings are intended for engine rebuilds needing the factory bore dimension on Cummins B 5.9L diesel engines. The description focuses on correct fitment for the named application and does not claim material or performance specifics beyond the provided source information.
Mahle MS Cummins B 5.9L (STD) Diesel Ring 1 cyl