6pcs Pistons & Rings Set A2720304017 A2720301018 2720300117 2720303717 for E-CLASS W212 W211 M272 E25 E30 Engine This 6pcs Pistons & Rings Set is designed for use with M272 E25 and E30 engines found in E-CLASS W212 and W211 models.The pistons are constructed from forged aluminum and equipped with steel rings, supporting engine under normal driving conditions.The set features a standard 0.00 specification with no fit cylinder expansion, maintaining consistent clearance within the combustion chamber. The cylinder bore measures Φ88mm, with a bolt diameter of Φ22mm and a bolt length of 48mm, compatibility with specified engine configurations.Ring thickness options of 1.5mm, 1.8mm, and 2.5mm allow for appropriate ring selection based on cylinder condition and machining requirements. Engineered for direct replacement, this set includes 6 pistons and corresponding rings, providing all necessary components for reconditioning or rebuilding the engine.The design supports straightforward installation, suitable for both professional repair environments and experienced DIY applications. Important Notice: This aftermarket part is unaffiliated with brands.Model mentions indicate fitment only.