This is a 12 ring set for all 4 cylinders STD Size for 73.4 mm Bore Thicknesses 1.2mm-1.2mm-2.0mm Replaces Vauxhall / Opel part numbers: 55571028, 93179723, 9319723, 630012, 630157 Please confirm fitment using an engine code as some models may have other options Package Included: 12PCS Piston Ring Set.
