Pistons & Rings Set Φ82mm CR11:1 OE11259468870 For B46 B48 2.0T F20 520i S F54 F56 F57 F60 This Pistons & Rings Set features a cylinder bore of Φ82.00mm and a piston diameter of Φ82mm, designed for fitment in 2.0T engines.The set includes four pistons and matching rings, with a compression ratio of 11:1 to support efficient combustion and engine .Constructed from cast aluminum, the pistons offer reduced weight and improved thermal management.The three-piece piston ring system consists of a 1.2mm first ring, 1.5mm second ring, and 2.0mm third ring, providing effective sealing and heat dissipation.This set is compatible with engine models B46 and B48, and fits applications including F20, 520i, F54, F56, F57, F60, and other related platforms.Designed for straightforward installation, it serves as a direct replacement for the specified OE number. This is an aftermarket spare.Brand and model mentions do not imply manufacturer association.