4pcs Car Pistons & Rings Set CR 11:1 11259468870 For 120i 320i 420i 520i X1 X2 X3 X4 S F30 F56 G20 G30 B48 2.0T This piston and ring set is designed for replacement use in vehicles equipped with the B48 2.0T engine.The set includes four complete piston assemblies with rings, each meeting dimensional specifications.Compression ratio is 11:1.Cylinder bore diameter is 82.00 mm.Wrist pin diameter is 22 mm.Ring thicknesses are 1.2 mm (first compression ring), 1.5 mm (second compression ring), and 2.0 mm (oil control ring). Compatible With 120i (F20/F21, 2015–2019), 320i (F30/F31/G20/G21, 2015–2020), 420i (F32/F33/F36, 2015–2019), 520i (G30/G31, 2016–2020), X1 sDrive20i (F48, 2015–2019), X2 sDrive20i (F39, not listed in title — excluded), X3 sDrive20i (G01, 2017–2020), X4 sDrive20i (G02, 2017–2020), S (F56, 2015–2019), and related models specified in the title.Fits B48B20A 2.0L turbocharged engines (1998 cc). Replaces OE part number 11259468870.Also compatible with OE numbers 11258638448, 11258618502, 11258657760, and 11258623260. The set is intended for standard bore applications (no cylinder overbore required).Packaging is neutral with no branding or logos.