Mahle Piston Ring Set is supplied as a file-fit kit sized for the listed bore, here 3.581"+0.005, with ring thicknesses of 1.5mm, 1.5mm and 3.0mm. These rings are intended for careful end-gap and file-fit preparation during engine assembly to ensure proper sealing and oil control. The set provides straightforward, dimension-matched components for reliable combustion sealing when correctly fitted.
Mahle MS 3.581in+.005in 1.5 1.5 3.0 mm File Fit Rings