DPGKITS 4pcs Pistons & Rings 11258606459 N20B20A 87-434600-00 For 328i 428i 528i X3 F30 F10 2.0T Φ84mm / CR Engine Parts This set includes 4 pistons and matching piston rings designed for engines with the N20B20A configuration.Each piston has a standard bore diameter of Φ84.00mm, pin diameter of Φ22mm, and is intended for use in 2.0L turbocharged L4 engines with a compression ratio of 10:1.Ring thicknesses are 1.2mm, 1.5mm, and 2.0mm.The parts are compatible with models equipped with the N20B20A, N20B20B, N20B20D, or N26B20A engine variants. Fitment includes: 125i (F20/F21, 2010–2016), 220i (F22/F23, 2012–2016), 228i/228ix (F22/F23, 2012–2016), 320i/320ix (F30/F31, 2012–2016; F30 U.S., 2014–2017), 328i/328ix (F30/F31, 2011–2016), 320i/320ix GT (F34, 2012–2016), 328i/328ix GT (F34, 2012–2016), 420i/420ix (F32, 2013–2017), 428i/428ix (F32/F33/F36, 2013–2017), 520i (F10/F11, 2010–2017), 528i/528ix (F10/F11, 2011–2017), 528i GT (F07, 2012–2017), X1 20i/20ix (E84, 2009–2015), X1 28i/28ix (E84, 2009–2015), X3 20i/20ix (F25, 2011–2017), X3 28i/28ix (F25, 2011–2017), X4 20ix (F26, 2013–2017), X4 28ix (F26, 2013–2017), X5 28ix (F15, 2013–2017), X5 40e (F15, 2013–2017), X6 28ix (F16, 2014–2018), Z4 18i/20i (E89, 2011–2016), Z4 28i (E89, 2011–2016). Replacement OE part numbers include: 11258606459, 87-434600-00, WG1175839.This set is intended for engine overhaul and rebuild applications where specifications must be maintained. Disclaimer: This replacement is not affiliated with any manufacturer.Model references indicate fitment only.