Mahle file-fit piston ring set is supplied for oversized bores and intended for engine rebuilds requiring precise ring-to-cylinder matching. These rings are sold for a 4.320"+0.005 bore size and must be filed to fit the cylinder for reliable sealing and oil control. The set includes 1/16, 1/16 and 3/16" ring sections as listed and is presented as a file-fit ring pack sized to the specified oversize bore dimension.
Mahle MS 4.320in+ .005in 1/16in 1/16in 3/16in File Fit Rings