N20B20A 2.0T Pistons Rings Φ84mm 11257594453 11257640166 Connecting Rod 11247624616 For 328i 428i 528i X3 F30 F10 Material: steel for and performance Compression Ratio: 10:1, optimized for 2.0L L4 Turbo engines Piston & Ring Specifications: Φ84mm bore, 1.2mm/1.5mm/2.0mm ring thickness options Connecting Rod Specifications: Φ22mm pin diameter, 11247624616 Compatibility: Designed for models including 1 Series, 3 Series, 5 Series, X3, X4, X5, and Z4 with N20B20A engine applications such as 328i, 428i, 528i, F30, F10, and X3 variants The N20B20A 2.0T Pistons Rings Φ84mm provide an aftermarket solution for engine performance.These components are engineered to fit specific inline-4 turbocharged engine configurations, alignment with specifications.The 10:1 compression ratio supports improved power output and combustion efficiency in turbocharged applications.Constructed from steel, the pistons and rings are designed to handle increased thermal and mechanical loads.The Φ84mm bore size ensures precise cylinder matching for effective sealing and combustion stability.Multiple ring thickness options allow adaptation to various operating conditions and rebuild requirements.The connecting rod, 11247624616, is built to endure -stress environments typical in turbocharged engines, contributing to overall engine.The package includes pistons, rings, and connecting rods for a complete in-block assembly.Each component is designed to integrate without requiring modifications during installation.Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.