This is a LuK Concentric Slave Cylinder (CSC) with part number 510009810. It features a hydraulics connection diameter of 11.7 mm and is designed as a central slave cylinder for clutch systems. Please observe the service information provided for installation and usage guidelines. Compatible with RENAULT LAGUNA Mk2 2.0 models from 01 to 07. OEM references include DACIA 306208527R, 8200102464, 8200148787, 820020, and others from SACHS and VALEO. Always verify compatibility with your vehicle before purchasing.