The product is a front differential carrier diff for Mercedes-Benz W221, W216, SL550, S550, and CL550 vehicles with all-wheel drive (AWD) and 4MATIC system. It has an OE/OEM part number of 2213300402, A2213300402, 221 330 04 02 0402, A2213307500 / A 221 330 75 00 7500, 2213308700 / A2213308700, A 221 330 87 00 8700, 2213350208 / A2213350208 / A 221 335 02 08, 2213350100 / A2213350100 / A 221 335 01 00 0100, 2213310405, 2213301402 / A2213301402 / A 221 330 14 02 1402, 2213307500. The gear ratio is 2.65, and it is a genuine Mercedes part made in the United Kingdom. It comes with a 1-month manufacturer warranty and is a specific fitment for the listed vehicle models.