8x Pistons & Rings + Connecting Rod Bearing Set designed for use with N63B44 4.4L (4395cc) V8 Twin Turbo Engine.This set is compatible with models equipped with N62 and N63 engines, including applications related to 550i, 750i, X5 F01, F02, F03, E70, E71.The package includes a full set of 8 pistons with rings and connecting rod bearings as shown. Constructed with materials, the pistons and rings are engineered to support engine efficiency .The cylinder bore diameter measures Φ89mm, with a compression height of 32.1mm and overall length of 52.6mm.The pin or bolt has a diameter of Φ22mm and a length of 60mm, designed to meet specifications for fitment. The connecting rod bearings are included to smooth and reduced friction within the engine assembly.Components are -made to align with standard engine dimensions, supporting straightforward installation and integration into the existing engine block.Suitable for use during engine rebuilds or performance , this set supports consistent engine performance under demanding conditions. Compatibility Disclaimer: This is not an OEM item.Mentioned brands/models are used strictly for fitment illustration.