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The Mahle plain second-ring set is a Napier steel 2nd piston ring sized 4.050 in with 1.0 mm thickness and .136 in RW. Offered for engine rebuilds and shop usage, this plain ring set restores the second-ring sealing and oil-control function where precise dimension matching is required during cylinder reassembly and bore servicing.
Mahle Rings Performance Napier Steel 2nd Ring 4.050in x 1.0MM .136in RW Plain Ring Set
