Replacement piston set designed for 1.8L M271 engines with a cylinder bore of 82mm.This 4-piece kit includes pistons and rings engineered to restore engine performance.Constructed from aluminum, the set is built for durability and consistent.Designed to fit models including W203, W204, A209, and C200K, it dimensional compatibility with the M271 1.8 Supercharged (1796cc) Kompressor engine.The STD 0.00 specification prevents cylinder bore expansion, supporting stable engine function.Piston rings are provided in thicknesses of 1.2mm, 1.5mm, and 2.5mm to proper sealing and efficient combustion.Intended for direct replacement of worn pistons, this set supports integration and long-term engine health. Compatibility Statement: This is not an manufacturer part.Brand/model references are used for fitment guidance.