Mahle file-fit piston ring set is intended for oversized bores and engine rebuilds that require precise ring fitting. Specified for a 4.350"+0.005 bore, the pack must be filed to match cylinder dimensions for effective sealing and oil control. The set lists 1/16, 1/16 and 3/16" ring sections and is provided as a file-fit ring kit sized to the specified oversize bore.
Mahle MS 4.350in+ .005in 1/16in 1/16in 3/16in File Fit Rings