This Mahle plasma moly steel top compression ring set is specified for 4.140" x .0625" x .190" piston applications and is offered as a matched RW moly ring set. The plasma-moly treatment on the steel top compression ring enhances wear resistance and seating characteristics. Supplied as a precision-fit ring set, it matches the listed dimensions for engine rebuild and machine-shop use.
Mahle Rings Plasma Moly Steel Top Compression Ring 4.140in x .0625in .190in RW Moly Ring Set