6-Piece Piston Rings Kit STD 84mm for N55B30 N55B30A Engines Compatible with F20 F21 F30 F10 X3 X4 X5 X6 2010-2017

This 6-piece piston rings kit is designed for N55B30 and N55B30A 3.0L inline-6 twin-turbo engines (2979cc) with a standard cylinder bore size of 84.00mm.It is not intended for use in cylinders that have been bored or honed beyond standard dimensions.Each set includes piston rings with the following specifications: first ring thickness 1.2mm, second ring 1.5mm, and third ring 2.0mm.Wrist pin diameter is 22mm with a length of 54mm.Compatible with models F20, F21, F30, F10, X3, X4, X5, and X6 produced between 2010 and 2017.Reference part numbers include 11257589824 and 11257587914.

• Compatible with F20, F21, F30, F10, X3, X4, X5, and X6 models equipped with N55B30 or N55B30A engines from 2010 to 2017.Standard 84mm piston rings designed for proper cylinder fit and engine compression.Includes 6 piston rings to support engine performance restoration and reduced oil consumption in mileage vehicles.Replacement for part numbers 11257589824 and 11257587914 to correct fitment.Suitable for engine rebuilds and routine maintenance to maintain consistent engine sealing and performance.