4x Pistons & Rings Set Φ82mm For W203 W204 A209 C200K 1.8L M271 2710300024 2710302217 A2710302217 791098-00-4 This piston and ring set is designed for engines with a cylinder bore of 82.0mm.It fits the M271 1.8L supercharged engine with 1796cc displacement.The set includes four pistons with accompanying rings, each with a compressed height of 29.9mm and a pin diameter of 20.0mm.The pin length measures 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.This standard size set does not require cylinder expansion.OE numbers associated with this product include 2710300024, 2710302217, 2710306617, A2710300024, A2710302217, A2710306617, N000000000936, and N073130020100.Additional part numbers are 41811600, 0040800, 8770444, 8782640022, 0842760010, 800120910000, 00406N0, and 791098004.Package includes 4x piston and ring assemblies.