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The Mahle OE plain second ring set is a performance steel piston ring kit specified as 3.5039 in x 1.2 mm .135 in RW, intended as a direct replacement second ring for compatible engines. Mahle OE manufacturing tolerances support proper sealing and ring control during rebuilds or repairs; these plain ring sets are supplied to meet accurate ring dimensions and OE-style fitment requirements.
Mahle Rings Performance Steel Napier 2nd Ring 3.5039in x 1.2MM .135in RW Plain Ring Set
