Transfer Case Assembly A2512802100 2512802900 for X164 W164 W251 GL420 ML320 ML350 R350 Before installation, be sure to add gear oil to the transfer case. Failure to add gear oil before installation can damage the product and may lead to premature failure. Proper lubrication is critical to the performance and longevity of your transfer case. Follow the manufacturer's instructions for adding gear oil prior to installation. Use the correct gear oil and add it in the proper amount. Gear Oil Type: 75W-90 OEM Part Number: 2512800700 2512800900 2512801200 2512801800 2512802100 2512802700 2512802900 2512803500 A2512800700 A2512800900 A2512801200 A2512801800 A2512802100 A2512802700 A2512802900 A2512803500 Fit For the Following Models: GL-Class GL 320 2006-2012 GL-Class GL 350 2009-2016 GL-Class GL 400 2013-2016 GL-Class GL 420 2006-2009 GL-Class GL 450 2006-2012 GL-Class GL 500 2006-2016 GL-Class GL 63 AMG 2012-2016 M-Class ML 320 2005-2011 M-Class ML 350 2005-2015 M-Class ML 420 2006-2009 M-Class ML 500 2005-2015 M-Class ML 63 AMG 2006-2015 R-Class R 350 2006-2016 R-Class R 500 2006-2014 Check vehicle compatibility to ensure this product is suitable for your car. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.