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Mahle OE plain ring set: a performance steel Napier second ring in plain configuration sized 3.781 in with 1.0 mm face specification and .136 in RW per the catalog description. Intended as a replacement for engine rebuilds that require these dimensions, the set provides the specified plain second-ring profile for correct fit and function.
Mahle Rings Performance Steel Napier 2nd Ring 3.781in x 1.0MM .136in RW Plain Ring Set
