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Mahle OE HV385 top ring set, 4.025" diameter by 1.5mm (.151") with RW moly finish. The description identifies a plasma-moly treated steel HV385 top ring sized to the exact 4.025 x 1.5mm dimensions for direct-fit replacement. It’s intended for rebuilds and service work that require the HV385 profile and precise ring sizing.
Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 4.025in x 1.5MM .151in RW Moly Ring Set
