6pcs N54 Engine Pistons and Rings with a Φ84mm bore and 22mm wrist diameter, designed for engines with model designation N54B30.Constructed from forged aluminum for increased and function.These pistons meet STD 0.00 specifications and are engineered to prevent cylinder expansion, supporting consistent engine and improved longevity.The set includes six pistons and corresponding rings, intended for use in vehicles requiring OEM 11257610295.Compatible with models E82, E90, and E60 equipped with the N54B30 engine, including variants such as 135i, 335i, 535i, and 740i.Designed as a direct replacement for straightforward installation without modifications.