AP02 Transfer Case Assembly 2512801200 for ML320 ML350 ML550 GL550 2006-2012 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 : 2512801200 A2512801200 Fit For the Following Models: GL-Class GL 320 2006-2012 GL-Class GL 350 2009-2016 GL-Class GL 450 2006-2012 GL-Class GL 500 2006-2016 M-Class ML 320 2005-2011 M-Class ML 350 2005-2015 M-Class ML 500 2005-2015 Check vehicle compatibility to this fits 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.