4pcs Pistons and rings kit for B46B20 and B48B20A 2.0L turbocharged engines with compression ratio 11:1.This set is designed for engine rebuilds and includes 4 complete piston and ring assemblies.Each piston fits a cylinder bore diameter of 82.00mm and features a wrist pin diameter of 22mm.Ring thickness specifications are 1.2mm for the first ring, 1.5mm for the second ring, and 2.0mm for the third ring.The kit is intended for standard size applications with no cylinder wall expansion required.Matches OEM part numbers 11259468870, 11258638448, 11258618502, 11258657760, and 11258623260.Compatible with vehicle models equipped with B46 or B48 2.0T engines requiring a compression ratio of 11:1.