Replacement engine pistons and rings set for M276 3.0L V6 DOHC turbocharged engines.Compatible with models including W205, W212, W213, W222, R231, C218, X166, W166, and X253.Fits engines with cylinder bore diameter Φ88mm.Includes six piston assemblies with matching ring sets.Piston pin bolt diameter is Φ22mm and length is 50mm.Ring thicknesses: first compression ring 1.2mm, second compression ring 1.5mm, oil control ring 2.0mm.OE replacement part numbers: 2760300700 and 2760306517.Compatible with M276 3.0T (2996cc) engines used in E400, C400, C450 , C43 , S320, S350L, CLS400, GL400, GL450, GLE400, GLE450 , GLE43 , SL400, and other applicable models. Disclaimer: This is an aftermarket spare part.Trademarks are used only to specify compatible devices.