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Mahle OE Moly top ring set is a plasma steel top ring sized 4.055 in with 1.0 mm thickness and .143 in RW, featuring an HVOF moly finish. Offered as a complete ring set for piston assemblies, it provides the dimensional accuracy required for bore-specific replacements during engine builds or maintenance. The naming and sizing help you match ring geometry to the correct piston and cylinder bore.
Mahle Rings Performance Plasma Steel Top Ring 4.055in x 1.0MM .143in RW HVOF Moly Ring Set
