The Mahle file-fit piston ring set for a 4.035 in bore (+0.005 in) includes 1.0mm top, 1.0mm second and 2.0mm oil rings. Supplied oversize for careful filing to final end-gap, these rings are intended for engine rebuilds where precise ring clearance and seating are required. The file-fit approach gives rebuilders control to match ring end-gap to cylinder bore conditions.
Mahle MS 4.035in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings