Kit Parts Included:Engine Piston Ring Set; Engine Piston RingsGreasable or Sealed:JapanPiston Ring Size (Metric Units):See options aboveManufacturer Part Number:DG-0664467305Interchange Part Number:68165801AA, 68231951ABPlacement on Vehicle:FrontMeasurement:Standard Bore Diameter 88.00mm; Height: 1.20mm x 1.20mm x 2.00mmOE/OEM Part Number:68231951ADBrand:MahleFitment Type:Direct ReplacementOE Spec or Performance/Custom:OE SpecType:Engine Piston Ring Set; Engine Piston RingsManufacturer Warranty:YesMaterial:Premium Steel Material Piston RingsKit or Single Part:KitItems Included:Piston Rings