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Mahle OE plain second ring set — 3.909-inch diameter, 1.0 mm thickness — is a performance steel plain ring supplied for piston rebuilds and replacement needs. Presented without extra frills, this ring matches specified Napier-style dimensions and is appropriate for engine overhauls where the listed size is required. Suitable for repair shops and rebuild projects requiring this precise ring size.
Mahle Rings Performance Steel Napier 2nd Ring 3.909in x 1.0MM .136in RW Plain Ring Set
