Piston Diameter: Φ83mm Pin Bolt Diameter: Φ30mm Pin Bolt Length: 66mm Ring Thickness: 1st - 2.0mm, 2nd - 2.0mm, 3rd - 2.0mm Fit: 3.0L V6 DOHC OM246 engine Material: Materials with resistance to wear and heat The Engine Part Piston & Ring Set is designed for the 3.0L V6 DOHC OM246 engine platform.It fits a range of models including CLS350, E350, ML350, GL350, S350, and Bluetec 3.0L variants.The pistons and rings are engineered to maintain consistent compression and reduce friction, contributing to smoother engine and improved fuel efficiency.This piston and ring set is built as a direct replacement, compatibility with specified engine configurations.It supports restoration of engine performance to factory levels.The set includes pistons, rings, and necessary accessories for installation.Designed for durability under normal operating conditions, it supports engine function for daily use and extended.