4pcs Pistons & Rings Set Φ82mm 2710300024 2710302217 2710306617 A2710302217 For 1.8L W203 W204 A209 C200K M271 Piston and ring set designed for engines with a cylinder bore of Φ82mm, compatible with models equipped with the M271 engine including W203, W204, and A209.The kit includes four pistons with compressed height of 29.9mm, piston pin diameter of 20.0mm, and pin length of 56.0mm.Ring thickness specifications are 1.2mm for the first ring, 1.5mm for the second ring, and 2.5mm for the third ring.Components are engineered to maintain combustion efficiency and support engine under standard driving conditions.The set includes pistons, rings, and associated pins and bolts for complete cylinder assembly replacement. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.