For N55B30 N55B30A 3.0L L6 Engine E82 E90 F20 F32 F10 F15 F25 F26 X3 X4 X5 X6 6pcs Pistons Rings Set Φ84mm OE 11258619196 Piston and ring set designed for N55B30 and N55B30A 3.0L L6 engines.Constructed from forged aluminum to support enhanced compression ratio and improved engine performance.Set includes 6 pistons and rings, engineered to meet standard 0.00 specifications for consistent under demanding conditions.Design supports efficient heat dissipation for stable performance during extended use. Compatible with vehicle models including E82, E90, F20, F32, F10, F15, F25, F26, X3, X4, X5, and X6 series.Fitment can be confirmed using OE number 11258619196.The set features a cylinder bore of Φ84mm and wrist pin diameter of Φ22mm, matching engine specifications.Ring configuration includes 1st ring at 1.2mm, 2nd ring at 1.5mm, and oil control ring at 2.0mm, providing effective sealing and operational efficiency. This complete piston and ring assembly is intended for engine rebuilds or performance , offering function and compatibility with specified engine types. This is an aftermarket accessory.Brand names and model numbers are referenced strictly for compatibility information.