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The Mahle MS piston ring set sized 4.000in +0.005 includes three file-fit rings with thicknesses 1.5mm, 1.5mm and 3.0mm. Supplied for engine rebuilds, the oversize ring set is intended for finish-fitting to cylinder bores by an engine builder or machinist, enabling restoration of ring-to-bore fit, compression sealing and appropriate oil control during reassembly.
Mahle MS 4.000in+ .005in 1.5 1.5 3.0 mm File Fit Rings
