Mahle file-fit top ring intended for severe-duty use, sized for a 4.560 in bore with a 1.5mm GNS top ring and supplied to +0.005 tolerance. This precision top ring is sold for rebuild and repair work where accurate sizing matters; it is provided as a file-fit item to be mated to the cylinder bore to restore sealing and compression control.
Mahle MS 4.560in 1.5mm GNS Severe Duty Top Ring