MAHLE Plasma Moly File-to-fit piston ring sets are designed to fit most MAHLE 9 SERIES PISTONS ONLY for 4.6 and 5.4 engines. These rings come as a complete set with 1mm top rings, 1mm 2nd rings, and 2mm oil rings. They are available in standard, +.020", and +.030" bore sizes and are all oversized for file fitting.
