4 Set KS Pistons Rings Kit Φ83mm STD 2740371401 2740301617 2740301517 2740300417 For C250 C300 W205 2.0T M274.920 This piston and ring kit is designed for use with 2.0T M274.920 engines.It includes four sets of pistons and rings built to standard specifications with a cylinder bore size of Φ83.00mm.The kit maintains a precise fit without requiring cylinder expansion, supporting consistent engine.The pistons are equipped with bolts measuring Φ20mm in diameter and 51mm in length.Ring thicknesses are 1.2mm, 1.0mm, and 2.0mm, matching dimensions for performance.Components are engineered for compatibility with models utilizing the M274.920 engine platform.Installation is straightforward, with all necessary parts included for full replacement.The design allows integration with existing engine components, making it suitable for both professional and DIY applications.