4 Pcs Piston & Ring 11257566019 For R55-R61 N14 TURBO Cooper Countryman 2006-2016 Engines & Components Pistons Parts Upgrade engine performance with a set of 4 pistons and rings designed for compatibility with R55-R61 N14 TURBO Cooper Countryman models from 2006 to 2016.This assembly is engineered to support efficient in 1598 CC / 16V engines, featuring a standard 77 mm bore size with piston ring dimensions of 1.2 x 1.5 x 2.0.The components are constructed to reduce friction and manage heat effectively, contributing to sustained engine function under demanding conditions. The set includes 4 pistons, 12 piston rings, 4 wrist pins, and 8 snap rings, providing a complete solution for piston assembly replacement.Designed for precise fitment, the parts align with OE specification 11257566019, compatibility with intended engine configurations.Material composition meets industry standards for durability, with no detectable volatile substances released at temperatures, supporting long-term. Installation follows standard procedures and does not require specialized tools or modifications.For accurate fitment verification, confirm vehicle specifications including year, model, trim, and engine type prior to installation.This piston and ring set supports both maintenance and performance-oriented engine rebuilds. This product is a third-party replacement.Any use of brand names or model designations is purely to indicate compatibility.