This piston rings set is designed for vehicles equipped with the M272 V6 engine, including 2.5L and 3.0L DOHC variants.It serves as a replacement for worn piston rings to help restore engine compression and operational efficiency.Constructed from steel, the components offer and resistance to wear for extended service life.Compatible with select models from 2005 to 2015, including C-Class, E-Class, CLK, CLS, ML, R-Class, SL, and SLK equipped with M272 E25 or E30 engines.The set includes piston rings with thickness options of 1.5mm, 1.8mm, and 2.5mm.Cylinder bore measures Φ88mm.Piston bolts have a diameter of Φ22mm and a length of 48mm.Designed for professional or DIY installation, this set supports engine function under standard operating conditions.