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Mahle OE supplies this plain second ring set sized 3.815 in x 1.0 mm with .136 in RW for use in compatible engines requiring Napier performance steel rings. The set is intended to restore ring sealing and oil control during rebuilds, offering a direct replacement that matches specified dimensions. Choose these rings when maintaining factory tolerances is critical to engine performance.
Mahle Rings Performance Steel Napier 2nd Ring 3.815in x 1.0MM .136in RW Plain Ring Set
