The Mahle MS piston ring set for a 4.620" bore (+0.005") includes matching top and second rings at .043" with a 3.0mm oil-ring section in a steel, standard-tension, file-fit configuration. These rings are intended as precision replacement components for engine rebuilds where exact bore and file-fit sizing matter, supplied to match the listed dimensions for proper ring fit and sealing.
Mahle MS 4.620in+.005in .043in .043in 3.0mm Steel STD Tension File Fit Rings