AP02 Transfer Case Assembly 2512801200 for ML320 ML350 ML550 GL550 2006-2012 Before installation, ensure gear oil is added to the transfer case. Using the correct gear oil type and proper amount is essential for performance and longevity. Gear Oil Type: 75W-90 OEM Part Number: 2512801200 Fits 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) Verify vehicle compatibility before purchase. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.