Mahle OE HV385 top ring set, 4.035" diameter by 1.5mm (.151") with RW moly treatment as described. The plasma-moly steel HV385 ring matches the listed dimensions for direct-fit replacement in engines specifying 4.035 x 1.5mm HV385 top rings. It supports rebuilds where the precise ring profile and surface finish are required.
Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 4.035in x 1.5MM .151in RW Moly Ring Set