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The Mahle OE Moly Ring Set is a performance piston ring kit featuring a 4.165 in diameter, 1.5 mm ring section and a .151 RW plasma-moly steel top ring. It’s intended to restore compression and control blow-by in engines that specify 4.165 in piston rings. Use this set when replacing worn rings during rebuilds or routine top-end service to maintain sealing under demanding conditions.
Mahle Rings Performance 4.165in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set
