6pcs Pistons & Rings Set A2720304017 A2720301018 2720300117 2720303717 for E-CLASS W212 W211 M272 E25 E30 Engine This 6-piece pistons and rings set is designed for use with M272 E25 and E30 engines found in E-CLASS W212 and W211 models.Made from forged aluminum, the pistons are paired with steel rings to support engine.The set features a standard 0.00 specification with no cylinder expansion, maintaining consistent combustion performance. The cylinder bore measures Φ88mm, with a bolt diameter of Φ22mm and bolt length of 48mm, precise fitment.Ring thickness options include 1.5mm, 1.8mm, and 2.5mm, allowing compatibility with various engine requirements.The design supports straightforward installation, suitable for both professional and DIY applications. Package includes 6 pistons and corresponding rings.This set provides a complete solution for engine rebuilds or performance maintenance. Disclaimer: This is a compatible replacement part.Any brand or model mentioned is for compatibility demonstration, not endorsement.