AP03 6x Pistons Rings Set STD 11258619196 Φ84mm for N55B30A F10 F20 F30 F80 M135i M235i X3 X5 X6 3.0L L6 Piston ring set with standard specification for cylinder bore of 84.00mm.Wrist pin diameter is 22mm with a wrist length of 54mm.Ring thicknesses are 1.2mm for the first ring, 1.5mm for the second ring, and 2.0mm for the third ring.Designed to fit engines N55B30 and N55B30A, 3.0L inline 6-cylinder twin-turbo configuration with displacement of 2979cc.Compatible with OE numbers 11258619196, 11257610297, 11257610298, 11257589824, 11257587914.Fits the following engine and model applications: - 135i models from 2011–2013 on chassis E82 E88 - M135i and M135i xDrive models from 2012–2016 on chassis F20 F21 - M235i and M235i xDrive models from 2013–2016 on chassis F22 F23 F87 - 335i models from 2010–2013 on chassis E90 E91 E92 E93 - 335i and 335i xDrive models from 2011–2015 on chassis F30 F31 F80 - 3 Series ActiveHybrid models from 2012–2015 on chassis F30 F80 - 335i Gran Turismo models from 2013–2016 on chassis F34 - 435i and 435i xDrive models from 2013–2016 on chassis F32 F33 F36 F82 F83 - 535i models from 2011–2016 on chassis F10 F11 - 535i Gran Turismo models from 2010–2017 on chassis F07 - 640i models from 2011–2016 on chassis F12 F13 - X3 xDrive35i models from 2011–2017 on chassis F25 - X4 xDrive35i models from 2014–2017 on chassis F26 - X5 xDrive35i models from 2012–2017 on chassis F15 F85 - X6 xDrive35i and xDrive40i models from 2011–2014 on chassis E71 E72 - X6 xDrive35i models from 2014–2016 on chassis F16 F86