RACEORLY Engine Rebuild Piston STD Bearing 0.25 For 120i 320i 520i X1 N46B20 Piston & Ring set, standard size (STD 0.00), designed for cylinder bore diameter Φ84 mm, piston pin diameter Φ20 mm, and ring thicknesses of 1.2 mm / 1.5 mm / 2.0 mm.Bearing kit includes main bearings and connecting rod bearings, both oversized by 0.25 mm.Compatible with N46B20 2.0L L4 (1995 cc) naturally aspirated engine.Package includes: - Piston & Ring set (4 pcs) - Full gasket kit (1 set) - Main bearing set (1 set) - Connecting rod bearing set (1 set) Fits models: - 120i (E87, 2008–2011) - 320i (E90, E92, 2005–2010) - 520i (2005–2010) - X1 (E84, 2010–2011) OE numbers referenced for compatibility only: Piston & Ring: 11257562452, 11257551602, I04001003 Full Gasket Kit: 11120308857, 11127509711, 11128655413, 101011201, 18307540797, 11617528584, 1117511529 Main Bearing: 11217627039, 11217512498, 11217627033, 11211439954, 11218605856, 11217627038, 11217627034, 11217627026 Connecting Rod Bearing: 11247536774, 11247536777, 11247628034, 11247628035