The Mahle MS piston ring for Ford 7.3L diesel is a replacement ring sized for a 4.110" cylinder and intended as a standard (STD) fit. Supplied as the ring for one cylinder, this MS-series item follows the Mahle 4.110" Ford 7.3L (STD) diesel specification and is intended for service replacements during routine engine rebuilds where standard-diameter rings are required.
Mahle MS Ford 7.3L (STD) Diesel Ring 1 cyl