This piston rings set features a 23mm wrist pin diameter and is designed for 2.0 TSI engines with cylinder bore of 82.51mm.Compatible engine codes include CJX, CYF, DJH, and DNU.The set includes four pistons with rings in standard size.Ring thicknesses are 1.2mm, 1.2mm, and 2.0mm, with a compression ratio of 9.3:1.Fits select and Seat vehicles such as S3 (8V), SQ2, TTS (FV), Clubsport, R (MK7), Superb (3V), and Leon (5F).Reference part numbers include 06K107065AG, 06K107065B, 06H198151C, 06J198151D, and 41533600S.Each set contains one complete piston and ring assembly for four-cylinder engines.