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The Mahle OE plain piston ring set is specified for a 4.150 in bore with .043 in ring thickness and .135 in RW measurement. This plain ring set restores piston sealing and helps recover lost compression during engine service. Offered as a standard retail ring set, it supplies the essential rings required for an individual engine rebuild or repair job.
Mahle Rings Performance Napier THM-13 4.150 x .043 .135in RW Plain Ring Set
