Mahle file-fit top ring intended for severe-duty use, sized for a 4.600 in bore with a 1.5mm GNS top ring and supplied to +0.005 tolerance. Designed for shop installation during engine rebuilds, the ring is provided as a precision file-fit component so technicians can achieve correct bore matching and reliable sealing for high-duty applications.
Mahle MS 4.600in 1.5mm GNS Severe Duty Top Ring