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The Mahle file‑fit piston ring set is specified for a 4.280 in bore with +0.005 in oversize and includes 1/16, 1/16, and 3/16 in ring sections for precision fitting. Intended for engine builders performing a file‑fit installation, these rings provide the standard sectional arrangement needed to match ring end gap and seating to the bore during assembly.
Mahle MS 4.280in+ .005in 1/16in 1/16in 3/16in File Fit Rings
